secondary vs junior

secondary and junior both are nouns.

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

secondary (noun)	junior (noun)
coil such that current is induced in it by passing a current through the primary coil	the younger of two persons
the defensive football players who line up behind the linemen	a third-year undergraduate
	term of address for a disrespectful and annoying male

secondary (adjective)	junior (adjective)
being of second rank or importance or value; not direct or immediate	younger; lower in rank; shorter in length of tenure or service
depending on or incidental to what is original or primary	used of the third or next to final year in United States high school or college
inferior in rank or status	including or intended for youthful persons
not of major importance
belonging to a lower class or rank