mucosa vs membrane

mucosa and membrane both are nouns.

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

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

mucosa: mucus-secreting membrane lining all body cavities or passages that communicate with the exterior
membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of mucosa include tissue layer.

mucosa (noun)	membrane (noun)
mucus-secreting membrane lining all body cavities or passages that communicate with the exterior	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