attestant vs informant

attestant and informant both are nouns.

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

As nouns, informant is a hypernym of attestant; that is, informant is a word with a broader meaning than attestant:

attestant: someone who affirms or vouches for the correctness or truth or genuineness of something
informant: someone who sees an event and reports what happened

Other hypernyms of attestant include witness, witnesser.

attestant (noun)	informant (noun)
(law) a person who attests to the genuineness of a document or signature by adding their own signature	a person who supplies information
someone who affirms or vouches for the correctness or truth or genuineness of something	someone who sees an event and reports what happened