risk vs assay

risk and assay both are nouns.

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

As verbs, assay is a hypernym of risk; that is, assay is a word with a broader meaning than risk:

Other hypernyms of risk include attempt, essay, seek, try.

As verbs, assay is a hypernym of risk; that is, assay is a word with a broader meaning than risk:

Other hypernyms of risk include attempt, essay, seek, try.

risk (noun)	assay (noun)
a venture undertaken without regard to possible loss or injury	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.
the probability of being exposed to an infectious agent	an appraisal of the state of affairs
the probability of becoming infected given that exposure to an infectious agent has occurred	a written report of the results of an analysis of the composition of some substance
a source of danger; a possibility of incurring loss or misfortune	a substance that is undergoing an analysis of its components

risk (verb)	assay (verb)
expose to a chance of loss or damage	analyze (chemical substances)
take a risk in the hope of a favorable outcome	make an effort or attempt