plica vs vocal cord

plica and vocal cord both are nouns.

Word	Noun	Adjective	Verb	Adverb
plica	Yes	No	No	No
vocal cord	Yes	No	No	No

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

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

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

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