cutis vs foreskin

cutis and foreskin both are nouns.

Word	Noun	Adjective	Verb	Adverb
cutis	Yes	No	No	No
foreskin	Yes	No	No	No

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

Other hyponyms of cutis include investment, thick skin, skin graft, buff, dewlap, prepuce, prepuce, scalp, cuticle, agnail, hangnail.

cutis (noun)	foreskin (noun)
a natural protective body covering and site of the sense of touch	a fold of skin covering the tip of the penis
	a fold of skin covering the tip of the clitoris