invent vs invention

invent is not a noun while invention is a noun.

Word	Noun	Adjective	Verb	Adverb
invent	No	No	Yes	No
invention	Yes	No	No	No

invent (noun)	invention (noun)
	the act of inventing
	a creation (a new device or process) resulting from study and experimentation
	the creation of something in the mind

invent (verb)	invention (verb)
come up with (an idea, plan, explanation, theory, or principle) after a mental effort
concoct something artificial or untrue