devisal vs invention

devisal and invention both are nouns.

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

As nouns, invention is a hypernym of devisal; that is, invention is a word with a broader meaning than devisal:

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