lesser peritoneal cavity vs omental bursa

lesser peritoneal cavity and omental bursa both are nouns.

Word	Noun	Adjective	Verb	Adverb
lesser peritoneal cavity	Yes	No	No	No
omental bursa	Yes	No	No	No

As nouns, lesser peritoneal cavity and omental bursa are synonyms defined as:

lesser peritoneal cavity and omental bursa: an isolated part of the peritoneal cavity that is dorsal to the stomach

Other synonyms of lesser peritoneal cavity include bursa omentalis.

lesser peritoneal cavity (noun)	omental bursa (noun)
an isolated part of the peritoneal cavity that is dorsal to the stomach	an isolated part of the peritoneal cavity that is dorsal to the stomach