plica vs epicanthus

plica and epicanthus both are nouns.

Word	Noun	Adjective	Verb	Adverb
plica	Yes	No	No	No
epicanthus	Yes	No	No	No

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

plica: a folded part (as in skin or muscle)
epicanthus: a vertical fold of skin over the nasal canthus; typical for many east Asian peoples; sometimes occurs in Down's syndrome

Other hyponyms of plica include epicanthic fold, plica vocalis, vocal band, vocal cord, vocal fold, ruga, tentorium.

plica (noun)	epicanthus (noun)
a folded part (as in skin or muscle)	a vertical fold of skin over the nasal canthus; typical for many east Asian peoples; sometimes occurs in Down's syndrome