bobbysocks vs bobbysock

bobbysocks and bobbysock both are nouns.

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

As nouns, bobbysocks and bobbysock are synonyms defined as:

Other synonyms of bobbysocks include anklet, anklets.

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