cuticle vs tegument

cuticle and tegument both are nouns.

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

As nouns, tegument is a hypernym of cuticle; that is, tegument is a word with a broader meaning than cuticle:

Other hypernyms of cuticle include cutis, skin.

cuticle (noun)	tegument (noun)
hard outer covering or case of certain organisms such as arthropods and turtles	a natural protective body covering and site of the sense of touch
the outer layer of the skin covering the exterior body surface of vertebrates
the dead skin at the base of a fingernail or toenail