blastoderm vs blastodisc

blastoderm and blastodisc both are nouns.

Word	Noun	Adjective	Verb	Adverb
blastoderm	Yes	No	No	No
blastodisc	Yes	No	No	No

As nouns, blastoderm and blastodisc are synonyms defined as:

blastoderm and blastodisc: a layer of cells on the inside of the blastula

Other synonyms of blastoderm include germinal area, germinal disc.

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