rummage vs search

rummage and search both are nouns.

Word	Noun	Adjective	Verb	Adverb
rummage	Yes	No	Yes	No
search	Yes	No	Yes	No

As nouns, search is a hypernym of rummage; that is, search is a word with a broader meaning than rummage:

rummage: a thorough search for something (often causing disorder or confusion)
search: the activity of looking thoroughly in order to find something or someone

Other hypernyms of rummage include hunt, hunting.

As verbs, search is a hypernym of rummage; that is, search is a word with a broader meaning than rummage:

rummage (noun)	search (noun)
a thorough search for something (often causing disorder or confusion)	the activity of looking thoroughly in order to find something or someone
a jumble of things to be given away	boarding and inspecting a ship on the high seas
	an investigation seeking answers
	the examination of alternative hypotheses
	an operation that determines whether one or more of a set of items has a specified property

rummage (verb)	search (verb)
search haphazardly	inquire into
	try to locate or discover, or try to establish the existence of
	subject to a search
	search or seek