plica vs plica vocalis

plica and plica vocalis both are nouns.

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

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

plica: a folded part (as in skin or muscle)
plica vocalis: either of two pairs of folds of mucous membrane projecting into the larynx

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

plica (noun)	plica vocalis (noun)
a folded part (as in skin or muscle)	either of two pairs of folds of mucous membrane projecting into the larynx