germinal disc vs blastodisc

germinal disc and blastodisc both are nouns.

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

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

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

Other synonyms of germinal disc include blastoderm, germinal area.

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