secondary vs utility

secondary and utility both are nouns.

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

secondary (noun)	utility (noun)
coil such that current is induced in it by passing a current through the primary coil	the service (electric power or water or transportation) provided by a public utility
the defensive football players who line up behind the linemen	a facility composed of one or more pieces of equipment connected to or part of a structure and designed to provide a service such as heat or electricity or water or sewage disposal
	the quality of being of practical use
	(computer science) a program designed for general support of the processes of a computer
	a company that performs a public service; subject to government regulation
	(economics) a measure that is to be maximized in any situation involving choice

secondary (adjective)	utility (adjective)
being of second rank or importance or value; not direct or immediate	used of beef; usable but inferior
depending on or incidental to what is original or primary	capable of substituting in any of several positions on a team
inferior in rank or status
not of major importance
belonging to a lower class or rank