wind sock vs windsock

wind sock and windsock both are nouns.

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

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

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

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

wind sock (noun)	windsock (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