serosa vs membrane

serosa and membrane both are nouns.

Word	Noun	Adjective	Verb	Adverb
serosa	Yes	No	No	No
membrane	Yes	No	No	No

As nouns, membrane is a hypernym of serosa; that is, membrane is a word with a broader meaning than serosa:

serosa: a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid
membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of serosa include tissue layer.

serosa (noun)	membrane (noun)
a thin membrane lining the closed cavities of the body; has two layers with a space between that is filled with serous fluid	a thin pliable sheet of material
	a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants