plica vs tentorium

plica and tentorium both are nouns.

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

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

plica: a folded part (as in skin or muscle)
tentorium: (anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum

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

plica (noun)	tentorium (noun)
a folded part (as in skin or muscle)	(anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum