fold vs vocal fold

fold and vocal fold both are nouns.

Word	Noun	Adjective	Verb	Adverb
fold	Yes	No	Yes	No
vocal fold	Yes	No	No	No

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

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

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

fold (noun)	vocal fold (noun)
the act of folding	either of two pairs of folds of mucous membrane projecting into the larynx
a pen for sheep
a folded part (as in skin or muscle)
a group of people who adhere to a common faith and habitually attend a given church
a group of sheep or goats
a geological process that causes a bend in a stratum of rock
an angular or rounded shape made by folding

fold (verb)	vocal fold (verb)
incorporate a food ingredient into a mixture by repeatedly turning it over without stirring or beating
become folded or folded up
bend or lay so that one part covers the other
confine in a fold, like sheep
cease to operate or cause to cease operating