tentative vs provisionary

tentative and provisionary both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tentative	No	Yes	No	No
provisionary	No	Yes	No	No

As adjectives, tentative and provisionary are synonyms defined as:

tentative and provisionary: under terms not final or fully worked out or agreed upon

Other synonyms of tentative include probationary, provisional.

tentative (adjective)	provisionary (adjective)
under terms not final or fully worked out or agreed upon	under terms not final or fully worked out or agreed upon
unsettled in mind or opinion