blastula vs blastocele

blastula and blastocele both are nouns.

Word	Noun	Adjective	Verb	Adverb
blastula	Yes	No	No	No
blastocele	Yes	No	No	No

blastula (noun)	blastocele (noun)
early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs	the fluid-filled cavity inside a blastula