immunochemical assay vs immunoassay

immunochemical assay and immunoassay both are nouns.

Word	Noun	Adjective	Verb	Adverb
immunochemical assay	Yes	No	No	No
immunoassay	Yes	No	No	No

As nouns, immunochemical assay and immunoassay are synonyms defined as:

immunochemical assay and immunoassay: identification of a substance (especially a protein) by its action as an antigen

immunochemical assay (noun)	immunoassay (noun)
identification of a substance (especially a protein) by its action as an antigen	identification of a substance (especially a protein) by its action as an antigen