detection vs detect

detection is a noun but detect is not a noun.

Word	Noun	Adjective	Verb	Adverb
detection	Yes	No	No	No
detect	No	No	Yes	No

detection (noun)	detect (noun)
the act of detecting something; catching sight of something
a police investigation to determine the perpetrator
the perception that something has occurred or some state exists
the detection that a signal is being received

detection (verb)	detect (verb)
	discover or determine the existence, presence, or fact of by perception with the eyes