probative vs probatory

probative and probatory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
probative	No	Yes	No	No
probatory	No	Yes	No	No

As adjectives, probative and probatory are synonyms defined as:

probative and probatory: tending to prove a particular proposition or to persuade you of the truth of an allegation

probative (adjective)	probatory (adjective)
tending to prove a particular proposition or to persuade you of the truth of an allegation	tending to prove a particular proposition or to persuade you of the truth of an allegation