junior vs secondary

junior and secondary both are nouns.

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

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

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