service routine vs utility

service routine and utility both are nouns.

Word	Noun	Adjective	Verb	Adverb
service routine	Yes	No	No	No
utility	Yes	Yes	No	No

service routine (noun)	utility (noun)
a routine that can be used as needed	the service (electric power or water or transportation) provided by a public utility
	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

service routine (adjective)	utility (adjective)
	used of beef; usable but inferior
	capable of substituting in any of several positions on a team