cutis vs tegument

cutis and tegument both are nouns.

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

As nouns, cutis and tegument are synonyms defined as:

cutis and tegument: a natural protective body covering and site of the sense of touch

Other synonyms of cutis include skin.

cutis (noun)	tegument (noun)
a natural protective body covering and site of the sense of touch	a natural protective body covering and site of the sense of touch