search vs searcher

search and searcher both are nouns.

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

search (noun)	searcher (noun)
the activity of looking thoroughly in order to find something or someone	large metallic blue-green beetle that preys on caterpillars; found in North America
boarding and inspecting a ship on the high seas	someone making a search or inquiry
an investigation seeking answers	a customs official whose job is to search baggage or goods or vehicles for contraband or dutiable items
the examination of alternative hypotheses
an operation that determines whether one or more of a set of items has a specified property

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