attestator vs attestant

attestator and attestant both are nouns.

Word	Noun	Adjective	Verb	Adverb
attestator	Yes	No	No	No
attestant	Yes	No	No	No

As nouns, attestator and attestant are synonyms defined as:

attestator and attestant: (law) a person who attests to the genuineness of a document or signature by adding their own signature

Other synonyms of attestator include attestor, witness.

attestator (noun)	attestant (noun)
(law) a person who attests to the genuineness of a document or signature by adding their own signature	(law) a person who attests to the genuineness of a document or signature by adding their own signature
	someone who affirms or vouches for the correctness or truth or genuineness of something