Pteris vittata, commonly known variously as the Chinese brake, Chinese ladder brake, or simply ladder brake, is a fern species in the Pteridoideae subfamily of the Pteridaceae.
 It is indigenous to Asia, southern Europe, tropical Africa and Australia.
 The type specimen was collected in China by Pehr Osbeck.
A leapfrog filter is a type of active circuit electronic filter that simulates a passive electronic ladder filter.
 Other names for this type of filter are active-ladder or multiple feedback filter.
 The arrangement of feedback loops in the signal flow-graph of the simulated ladder filter inspired the name "leapfrog filter".
 The leapfrog filter maintains the low component sensitivity of the passive ladder filter that it simulates.
A hook ladder, also known as a pompier ladder (from the French "pompier" meaning firefighter) is a type of ladder that can be attached to a window sill or similar ledge by the use of a hooked extending bill with serrations on the underside.
 The hooked ladder then hangs suspended vertically down the face of the building.
The Ladder was the first nationally distributed lesbian publication in the United States.
 It was published monthly from 1956 to 1970, and once every other month in 1971 and 1972.
 It was the primary publication and method of communication for the Daughters of Bilitis, the first lesbian organization in the US.
 It was supported by ONE, Inc. and the Mattachine Society, with whom the DOB retained friendly relations.
 The name of the magazine was derived from the artwork on its first cover, simple line drawings showing figures moving towards a ladder that disappeared into the clouds.
Glamour is a women's magazine published by Condé Nast Publications.
 Founded in 1939 and first published in April 1939 in the United States, it was originally called "Glamour of Hollywood".
Ladder track is a type of railway track in which the track is laid on longitudinal supports with transverse connectors holding the two rails at the correct gauge distance.
 Modern ladder track can be considered a development of baulk road, which supported rails on longitudinal wooden sleepers.
 Synonyms include longitudinal beam track.
A ladder match is a type of match in professional wrestling, most commonly one where an item (usually a title belt) is hung above the ring, and the winner is the contestant who climbs a ladder and retrieves the item.
 The ladder itself becomes a key feature of the match, as wrestlers will use the ladder as a weapon to strike the opponent(s), as a launching pad for acrobatic attacks, and frequently these matches include impressive falls from the top of the ladder.
 However, there were very few matches in which the hung item must be used in a special manner in order to win the match, such as striking the opponent with the item (see Bam Bam Bigelow Vs. Scott Hall taser match, where one must strike the opponent with the taser, regardless of who retrieved the taser first).
A frenum piercing is a type of body piercing located on the underside of the shaft of the penis.
 A series of parallel frenum piercings is known as a frenum ladder.
 A frenum ladder may be extended to include lorum piercings, hafada piercings and guiche piercings.
In chemistry, a ladder polymer is a type of double stranded polymer with the connectivity of a ladder.
 In a typical one-dimensional polymer, e.g. polyethylene and polysiloxanes, the monomers form two bonds, giving a chain.
 In a ladder polymer the monomers are interconnected by four bonds.
 Inorganic ladder polymers are found in synthetic and natural settings.
 Ladder polymers are a special case of cross-linked polymers because the crosslinks exist only with pairs of chains.
An eel ladder is type of fish ladder designed to help eels swim past barriers, such as dams and weirs or even natural barriers, to reach upriver feeding grounds.
 (Many eels are catadromous, living in fresh water but spawning at sea.)
 The basic design of an eel ladder has the eel swim over the barrier using an eel ascending ramp, which provides the eels a climbing substrate to "push against" while slithering upstream.
 For some higher barriers, elevator-style systems are also used.

Question: Glamour and The Ladder, are which type of media?
Answer: publication