big toe vs toe

big toe and toe both are nouns.

Word	Noun	Adjective	Verb	Adverb
big toe	Yes	No	No	No
toe	Yes	No	Yes	No

As nouns, toe is a hypernym of big toe; that is, toe is a word with a broader meaning than big toe:

big toe (noun)	toe (noun)
the first largest innermost toe	the part of footwear that provides a covering for the toes
	(golf) the part of a clubhead farthest from the shaft
	one of the digits of the foot
	forepart of a hoof

big toe (verb)	toe (verb)
	touch with the toe
	hit (a golf ball) with the toe of the club
	drive obliquely
	drive (a golf ball) with the toe of the club
	walk so that the toes assume an indicated position or direction