extremity vs toe

extremity and toe both are nouns.

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

As nouns, toe is a hyponym of extremity; that is, toe is a word with a more specific, narrower meaning than extremity:

Other hyponyms of extremity include pedal extremity, vertebrate foot, hand, manus, mitt, paw, finger.

extremity (noun)	toe (noun)
an external body part that projects from the body	the part of footwear that provides a covering for the toes
that part of a limb that is farthest from the torso	(golf) the part of a clubhead farthest from the shaft
the outermost or farthest region or point	one of the digits of the foot
the greatest or utmost degree	forepart of a hoof
an extreme condition or state (especially of adversity or disease)

extremity (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