windsock vs air sock

windsock and air sock both are nouns.

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

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

windsock 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 windsock include air-sleeve, drogue, sock, wind cone, wind sleeve, wind sock.

windsock (noun)	air sock (noun)
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