bio-assay vs bioassay

bio-assay and bioassay both are nouns.

Word	Noun	Adjective	Verb	Adverb
bio-assay	Yes	No	No	No
bioassay	Yes	No	Yes	No

As nouns, bio-assay and bioassay are synonyms defined as:

bio-assay and bioassay: appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard

bio-assay (noun)	bioassay (noun)
appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard	appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard

bio-assay (verb)	bioassay (verb)
	subject to a bio-assay