germinal disc vs blastoderm

germinal disc and blastoderm both are nouns.

Word	Noun	Adjective	Verb	Adverb
germinal disc	Yes	No	No	No
blastoderm	Yes	No	No	No

As nouns, germinal disc and blastoderm are synonyms defined as:

germinal disc and blastoderm: a layer of cells on the inside of the blastula

Other synonyms of germinal disc include blastodisc, germinal area.

germinal disc (noun)	blastoderm (noun)
a layer of cells on the inside of the blastula	a layer of cells on the inside of the blastula