ependyma vs membrane

ependyma and membrane both are nouns.

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

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

ependyma: thin epithelial membrane lining the ventricles of the brain and the spinal cord canal
membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of ependyma include tissue layer.

ependyma (noun)	membrane (noun)
thin epithelial membrane lining the ventricles of the brain and the spinal cord canal	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