Canary and Turncoat

Canary noun - A person who provides information about another's wrongdoing.

Turncoat and canary are semantically related. in sneak topic. In some cases you can use "Turncoat" instead a noun "Canary", when it comes to topics like informer, informer to police.

Turncoat noun - One who betrays a trust or an allegiance.

Canary and turncoat are semantically related. Sometimes you can use "Canary" instead a noun "Turncoat".