original vs originative

original is a noun but originative is not a noun.

Word	Noun	Adjective	Verb	Adverb
original	Yes	Yes	No	No
originative	No	Yes	No	No

original (noun)	originative (noun)
an original creation (i.e., an audio recording) from which copies can be made
something that serves as a model or a basis for making copies

original (adjective)	originative (adjective)
being or productive of something fresh and unusual; or being as first made or thought of	having the ability or power to create
(of e.g. information) not secondhand or by way of something intermediary	containing seeds of later development
not derived or copied or translated from something else
preceding all others in time or being as first made or performed