betrayer vs informant

betrayer and informant both are nouns.

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

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

betrayer: one who reveals confidential information to the police or other authority
informant: a person who supplies information

Other hypernyms of betrayer include source.

betrayer (noun)	informant (noun)
a person who says one thing and does another	a person who supplies information
one who reveals confidential information to the police or other authority	someone who sees an event and reports what happened