horn in vs search

horn in is not a noun while search is a noun.

Word	Noun	Adjective	Verb	Adverb
horn in	No	No	Yes	No
search	Yes	No	Yes	No

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

Other hypernyms of horn in include look.

horn in (noun)	search (noun)
	the activity of looking thoroughly in order to find something or someone
	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

horn in (verb)	search (verb)
search or inquire in a meddlesome way	inquire into
	try to locate or discover, or try to establish the existence of
	subject to a search
	search or seek