sneaker vs betrayer

sneaker and betrayer both are nouns.

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

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

sneaker: someone acting as an informer or decoy for the police
betrayer: one who reveals confidential information to the police or other authority

Other hypernyms of sneaker include blabber, informer, rat, squealer.

sneaker (noun)	betrayer (noun)
a canvas shoe with a pliable rubber sole	a person who says one thing and does another
someone acting as an informer or decoy for the police	one who reveals confidential information to the police or other authority