assay vs study

assay and study both are nouns.

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

As nouns, study is a hypernym of assay; that is, study is a word with a broader meaning than assay:

assay: a written report of the results of an analysis of the composition of some substance
study: a written document describing the findings of some individual or group

Other hypernyms of assay include report, written report.

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

assay: analyze (chemical substances)
study: consider in detail and subject to an analysis in order to discover essential features or meaning

Other hypernyms of assay include analyse, analyze, canvass, examine.

assay (noun)	study (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.	a detailed critical inspection
an appraisal of the state of affairs	a room used for reading and writing and studying
a written report of the results of an analysis of the composition of some substance	preliminary drawing for later elaboration
a substance that is undergoing an analysis of its components	attentive consideration and meditation
	a branch of knowledge
	applying the mind to learning and understanding a subject (especially by reading)
	a state of deep mental absorption
	a written document describing the findings of some individual or group
	a composition intended to develop one aspect of the performer's technique
	someone who memorizes quickly and easily (as the lines for a part in a play)

assay (verb)	study (verb)
analyze (chemical substances)	be a student of a certain subject
make an effort or attempt	learn by reading books
	consider in detail and subject to an analysis in order to discover essential features or meaning
	be a student; follow a course of study; be enrolled at an institute of learning
	think intently and at length, as for spiritual purposes
	give careful consideration to