invention vs devisal

invention and devisal both are nouns.

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

As nouns, devisal is a hyponym of invention; that is, devisal is a word with a more specific, narrower meaning than invention:

Other hyponyms of invention include coinage, neologism, neology, contrivance.

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