service routine vs procedure

service routine and procedure both are nouns.

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

As nouns, procedure is a hypernym of service routine; that is, procedure is a word with a broader meaning than service routine:

Other hypernyms of service routine include function, routine, subprogram, subroutine.

service routine (noun)	procedure (noun)
a routine that can be used as needed	a particular course of action intended to achieve a result
	a mode of conducting legal and parliamentary proceedings
	a process or series of acts especially of a practical or mechanical nature involved in a particular form of work
	a set sequence of steps, part of larger computer program