tissue layer vs membrane

tissue layer and membrane both are nouns.

Word	Noun	Adjective	Verb	Adverb
tissue layer	Yes	No	No	No
membrane	Yes	No	No	No

As nouns, tissue layer and membrane are synonyms defined as:

tissue layer and membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

tissue layer (noun)	membrane (noun)
a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants	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