meninges vs tissue layer

meninges and tissue layer both are nouns.

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

As nouns, tissue layer is a hypernym of meninges; that is, tissue layer is a word with a broader meaning than meninges:

meninges: a membrane (one of 3) that envelops the brain and spinal cord
tissue layer: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of meninges include membrane.

meninges (noun)	tissue layer (noun)
a membrane (one of 3) that envelops the brain and spinal cord	a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants