Question: What do Stratego and Trouble have in common?

Context paragraphs:
Stratego: Stratego is a strategy board game for two players on a board of 10×10 squares.  Each player controls 40 pieces representing individual officer ranks in an army.  The pieces have Napoleonic insignia.  The objective of the game is to find and capture the opponent's "Flag", or to capture so many enemy pieces that the opponent cannot make any further moves.  "Stratego" has simple enough rules for young children to play, but a depth of strategy that is also appealing to adults.  The game is a slightly modified copy of an early 20th century French game named "L'Attaque".  It has been in production in Europe since World War II and the United States since 1961.  There are now 2- and 4-handed versions, versions with 10, 30 or 40 pieces per player, and boards with smaller sizes (number of spaces).  There are also variant pieces and different rulesets.

Barra Head, Nova Scotia: Barra Head (Scottish Gaelic: "Beàrnaraigh"; named after Barra Head in Scotland) is a small community in the Canadian province of Nova Scotia, located in Richmond County on Cape Breton Island.  Barra Head surrounds a small inlet called Salmon River, which was the old name for Barra Head being salmon river had to be changed because it was far too common and the post office had trouble locating people.

Smilax bona-nox: Smilax bona-nox, known by the common names saw greenbrier, zarzaparrilla, catbrier, bullbrier, chinabrier, and tramp's trouble, is a species of flowering plant in the Smilacaceae, or greenbrier family.  The species is native to the southeastern United States from Delaware to Florida and as far west as Kansas and Texas, as well as Bermuda and much of Mexico.

Trouble (board game): Trouble (known as Frustration in the UK and Kimble in Finland) is a board game in which players compete to be the first to send four pieces all the way around a board.  Pieces are moved according to the roll of a die.  "Trouble" was developed by the Kohner Brothers and initially manufactured by Irwin Toy Ltd., later by Milton Bradley (now part of Hasbro).  The game was launched in the United States in 1965.  It is very similar to the much older game, "Mensch ärgere dich nicht", as well as another Hasbro game, "Sorry!"  (originally marketed by Parker Brothers).  The classic version is now marketed by Winning Moves.  All these games are versions of the classic Indian game Pachisi, which was first introduced to the western world in England under the name of "Ludo".

Tetanus: Tetanus, also known as lockjaw, is an infection characterized by muscle spasms.  In the most common type, the spasms begin in the jaw and then progress to the rest of the body.  These spasms usually last a few minutes each time and occur frequently for three to four weeks.  Spasms may be so severe that bone fractures may occur.  Other symptoms may include fever, sweating, headache, trouble swallowing, high blood pressure, and a fast heart rate.  Onset of symptoms is typically three to twenty-one days following infection.  It may take months to recover.  About 10% of those infected die.

Learoyd, Mulvaney and Ortheris: Thus Rudyard Kipling introduces, in the story "The Three Musketeers" (1888) three characters who were to reappear in many stories, and to give their name to his next collection "Soldiers Three".  Their characters are given in the sentence that follows: "Collectively, I think, but am not certain, they are the worst men in the regiment so far as genial blackguardism goes"—that is, they are 'trouble' to authority, and always on the lookout for petty gain; but Kipling is at pains never to suggest that they are evil or immoral.  They are representative of the admiration he has for the British Army—which he never sought to idealise as in any way perfect—as in the poems collected in "Barrack-Room Ballads" (1892), and also show his interest in, and respect for the 'uneducated' classes.  Kipling has great respect for the independence of mind, initiative and common sense of the three—and their cunning.

Snakebite: A snakebite is an injury caused by the bite of a snake, especially a venomous snake.  A common symptom of a bite from a venomous snake is the presence of two puncture wounds from the animal's fangs. Sometimes venom injection from the bite may occur.  This may result in redness, swelling, and severe pain at the area, which may take up to an hour to appear.  Vomiting, trouble seeing, tingling of the limbs, and sweating may result.  Most bites are on the hands or arms.  Fear following a bite is common with symptoms of a racing heart and feeling faint.  The venom may cause bleeding, kidney failure, a severe allergic reaction, tissue death around the bite, or breathing problems.  Bites may result in the loss of a limb or other chronic problems.  The outcome depends on the type of snake, the area of the body bitten, the amount of venom injected, and the health conditions of the person.  Problems are often more severe in children than adults, due to their smaller size.

Nuisance: Nuisance (from archaic "nocence", through Fr.  "noisance", "nuisance", from Lat.  "nocere", "to hurt") is a common law tort.  It means that which causes offence, annoyance, trouble or injury.  A nuisance can be either public (also "common") or private.  A public nuisance was defined by English scholar Sir J. F. Stephen as,

Duchenne muscular dystrophy: Duchenne muscular dystrophy (DMD) is a severe type of muscular dystrophy.  The symptom of muscle weakness usually begins around the age of four in boys and worsens quickly.  Typically muscle loss occurs first in the upper legs and pelvis followed by those of the upper arms.  This can result in trouble standing up.  Most are unable to walk by the age of 12.  Affected muscles may look larger due to increased fat content.  Scoliosis is also common.  Some may have intellectual disability.  Females with a single copy of the defective gene may show mild symptoms.

Mounted police: Mounted police are police who patrol on horseback or camelback.  They continue to serve in remote areas and in metropolitan areas where their day-to-day function may be picturesque or ceremonial, but they are also employed in crowd control because of their mobile mass and height advantage and increasingly in the UK for crime prevention and high visibility policing roles.  The added height and visibility that the horses give their riders allows officers to observe a wider area, but it also allows people in the wider area to see the officers, which helps deter crime and helps people find officers when they need them.  Mounted police may be employed for specialized duties ranging from patrol of parks and wilderness areas, where police cars would be impractical or noisy, to riot duty, where the horse serves to intimidate those whom it is desired to disperse through its larger size, or may be sent in to detain trouble makers or offenders from the crowd.  For example, in the UK, mounted police are most often seen at football matches, although they are also a common sight on the streets of many towns and cities as a visible police presence and crime deterrent during the day and night.  Some mounted police units are trained in search and rescue due to the horse's ability to travel where vehicles cannot.

Supporting paragraphs: Stratego Trouble (board game)
Answer: a board game