endoderm vs germ layer

endoderm and germ layer both are nouns.

Word	Noun	Adjective	Verb	Adverb
endoderm	Yes	No	No	No
germ layer	Yes	No	No	No

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

endoderm: the inner germ layer that develops into the lining of the digestive and respiratory systems
germ layer: (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation

endoderm (noun)	germ layer (noun)
the inner germ layer that develops into the lining of the digestive and respiratory systems	(embryology) any of the 3 layers of cells differentiated in embryos following gastrulation