secondary vs tributary

secondary and tributary both are nouns.

Word	Noun	Adjective	Verb	Adverb
secondary	Yes	Yes	No	No
tributary	Yes	Yes	No	No

secondary (noun)	tributary (noun)
coil such that current is induced in it by passing a current through the primary coil	a branch that flows into the main stream
the defensive football players who line up behind the linemen

secondary (adjective)	tributary (adjective)
being of second rank or importance or value; not direct or immediate	tending to bring about; being partly responsible for
depending on or incidental to what is original or primary	paying tribute
inferior in rank or status	(of a stream) flowing into a larger stream
not of major importance
belonging to a lower class or rank