trophoblast vs tissue layer

trophoblast and tissue layer both are nouns.

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

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

trophoblast: the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall
tissue layer: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of trophoblast include membrane.

trophoblast (noun)	tissue layer (noun)
the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall	a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants