invention vs invent

invention is a noun but invent is not a noun.

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

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

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