bobbysock vs bobbysocks

bobbysock and bobbysocks both are nouns.

Word	Noun	Adjective	Verb	Adverb
bobbysock	Yes	No	No	No
bobbysocks	Yes	No	No	No

As nouns, bobbysock and bobbysocks are synonyms defined as:

Other synonyms of bobbysock include anklet, anklets.

bobbysock (noun)	bobbysocks (noun)
a sock that reaches just above the ankle	a sock that reaches just above the ankle