modus operandi vs procedure

modus operandi and procedure both are nouns.

Word	Noun	Adjective	Verb	Adverb
modus operandi	Yes	No	No	No
procedure	Yes	No	No	No

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

Other hypernyms of modus operandi include process.

modus operandi (noun)	procedure (noun)
an unvarying or habitual method or procedure	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