extremity vs mitt

extremity and mitt both are nouns.

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

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

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

extremity (noun)	mitt (noun)
an external body part that projects from the body	the handwear used by fielders in playing baseball
that part of a limb that is farthest from the torso	the (prehensile) extremity of the superior limb
the outermost or farthest region or point
the greatest or utmost degree
an extreme condition or state (especially of adversity or disease)