Eri silk () comes from the caterpillar of "Samia cynthia ricini", found in northeast Nepal and some parts of China, Japan, and Thailand.
 The name "eri" is derived from the Assamese word "era", which means "castor", as the silkworm feeds on castor plants.
 One of the common names, the "Ailanthus silk moth", refers to the host plant.
 Eri silk is also known as endi or errandi in India.
 The woolly white silk is often referred to as the fabric of peace when it is processed without killing the silkworm.
 This process results in a silk called Ahimsa silk.
 Moths leave the cocoon and then the cocoons are harvested to be spun.
 The eri silkworm is the only completely domesticated silkworm other than "Bombyx mori".
Ilkal saree (Kannada: ಇಳಕಲ್ ಸೀರೆ ) is a traditional form of "saree" which is a common feminine wear in India.
 Ilkal saree takes its name from the town of Ilkal in the Bagalkot district of Karnataka state, India.
 Ilkal sarees are woven using cotton warp on the body and art silk warp for border and art silk warp for pallu portion of the saree.
 In some cases instead of art silk, pure silk is also used.
 Ilkal saree has been accorded Geographical Indication (GI) tag.
 Its GI tag number is 43.
Miracle is a 2004 American sports docudrama about the United States men's hockey team, led by head coach Herb Brooks, portrayed by Kurt Russell, that won the gold medal in the 1980 Winter Olympics.
 The American team's victory over the heavily favored Soviet professionals in the medal round was dubbed the Miracle on Ice.
 "Miracle" was directed by Gavin O'Connor and written by Eric Guggenheim and Mike Rich.
 It was released on February 6, 2004.
The "Miracle on Ice" refers to a medal-round game during the men's ice hockey tournament at the 1980 Winter Olympics in Lake Placid, New York, played between the hosting United States, and the defending gold medalists, the Soviet Union.
Ice stock sport (also known as "Bavarian Curling") is a winter sport, somewhat similar to curling.
 In German, it is known as .
 Competitors slide ice stocks over an ice surface, aiming for a target, or to cover the longest distance.
 Ice stocks have a gliding surface, to which a stick (ca 30 cm) is attached.
 The sport, mostly practised in southern Germany, Austria and Trentino-Alto Adige/Südtirol in Italy, has been demonstrated at the Winter Olympic Games on two occasions.
 Although the sport is traditionally played on an ice surface, events are also held on tarmac in summer.
David Mark "Silky" Silk (born January 1, 1958 in Scituate, Massachusetts) and raised in Scituate and Cohasset, Massachusetts is a retired professional American ice hockey player.
 His professional career, which spanned 13 years, included 249 NHL regular season games with the Boston Bruins, Winnipeg Jets, Detroit Red Wings and New York Rangers.
 Silk is arguably most famous for being a member of the 1980 US Men's hockey team that won the gold medal at the Olympics in Lake Placid.
 He is the cousin of former NHL and Boston Bruins player Mike Milbury.
An ice boat (often spelled as "iceboat") is a boat or purpose-built framework similar in functional design to a sail boat but fitted with skis or runners (skates) and designed to run over ice instead of through (liquid) water.
 Ice yachting is the sport of sailing and racing iceboats.
 Sail-able ice is known in the sport as "hard water" versus sailing on liquid or "soft" water.
 A related sport, land sailing, utilizes a configuration with an iceboat-like fuselage or frame equipped with wheels instead of runners.
 Iceboats commonly used for racing are usually only for one person, but several classes of two-seat and multiple-seat iceboats are more or less common.
 On some boats, a "side car" can be fitted to take others along for a ride.
Japanese silk is any silk harvested in the country of Japan.
 The silk industry there was predominant in the 1930s–50's, but it is less common now.
 The practice of harvesting silk began in Japan in the 3rd century, when the technique was adapted from their Chinese and Korean neighbors.
 They refined the techniques, and Japanese silk became widely known as being of very high quality.
A silk comforter (絲綿被) is a bed covering, most often used as a duvet, and also commonly referred to as a silk duvet, silk quilt, or silk blanket.
 Originally used and made in China, since the late 20th century, silk comforters have become more common in Western market areas.
 Their increasing popularity stems from a combination of factors, including their thermal properties, their light weight, and their natural hypoallergenic properties.
 The opening of the Chinese market to the world since the 1990s has also played a significant role in the spread of silk comforters, as China is both the world's biggest silk producer and silk comforter manufacturer.
Joseph O'Connell Cure (December 10, 1984 – November 8, 2015) was an American ice hockey player and actor.
 Cure made his film debut in Walt Disney Pictures' "Miracle" in 2004.
 Cure, a hockey player himself, was cast as Mike Ramsey, the youngest member of the "Miracle on Ice" U.S. ice hockey team at the 1980 Winter Olympics.

Question: What sport does Dave Silk and Miracle on Ice have in common?
Answer: hockey