adulterant vs foreign

adulterant is a noun but foreign is not a noun.

Word	Noun	Adjective	Verb	Adverb
adulterant	Yes	Yes	No	No
foreign	No	Yes	No	No

adulterant (noun)	foreign (noun)
any substance that lessens the purity or effectiveness of a substance

adulterant (adjective)	foreign (adjective)
making impure or corrupt by adding extraneous materials	relating to or originating in or characteristic of another place or part of the world
	of concern to or concerning the affairs of other nations (other than your own)
	not belonging to that in which it is contained; introduced from an outside source
	not contained in or deriving from the essential nature of something