witnesser vs informant

witnesser and informant both are nouns.

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

As nouns, witnesser and informant are synonyms defined as:

witnesser and informant: someone who sees an event and reports what happened

Other synonyms of witnesser include witness.

witnesser (noun)	informant (noun)
someone who sees an event and reports what happened	a person who supplies information
	someone who sees an event and reports what happened