invent vs devise

invent is not a noun while devise is a noun.

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

As verbs, invent and devise are synonyms defined as:

invent and devise: come up with (an idea, plan, explanation, theory, or principle) after a mental effort

Other synonyms of invent include contrive, excogitate, forge, formulate.

invent (noun)	devise (noun)
	(law) a gift of real property by will
	a will disposing of real property

invent (verb)	devise (verb)
come up with (an idea, plan, explanation, theory, or principle) after a mental effort	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
concoct something artificial or untrue	arrange by systematic planning and united effort
	give by will, especially real property