sock vs air sock

sock and air sock both are nouns.

Word	Noun	Adjective	Verb	Adverb
sock	Yes	No	Yes	No
air sock	Yes	No	No	No

As nouns, sock and air sock are synonyms defined as:

sock and air sock: a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind

Other synonyms of sock include air-sleeve, drogue, wind cone, wind sleeve, wind sock, windsock.

sock (noun)	air sock (noun)
hosiery consisting of a cloth covering for the foot; worn inside the shoe; reaches to between the ankle and the knee	a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind
a truncated cloth cone mounted on a mast; used (e.g., at airports) to show the direction of the wind

sock (verb)	air sock (verb)
hit hard