eardrum vs membrane

eardrum and membrane both are nouns.

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

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

eardrum: the membrane in the ear that vibrates to sound
membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of eardrum include tissue layer.

eardrum (noun)	membrane (noun)
the membrane in the ear that vibrates to sound	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