assay vs bioassay

assay and bioassay both are nouns.

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

As nouns, bioassay is a hyponym of assay; that is, bioassay is a word with a more specific, narrower meaning than assay:

assay: a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.
bioassay: appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard

As verbs, bioassay is a hyponym of assay; that is, bioassay is a word with a more specific, narrower meaning than assay:

assay (noun)	bioassay (noun)
a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.	appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard
an appraisal of the state of affairs
a written report of the results of an analysis of the composition of some substance
a substance that is undergoing an analysis of its components

assay (verb)	bioassay (verb)
analyze (chemical substances)	subject to a bio-assay
make an effort or attempt