ratter vs turncoat

ratter and turncoat both are nouns.

Word	Noun	Adjective	Verb	Adverb
ratter	Yes	No	No	No
turncoat	Yes	No	No	No

As nouns, ratter and turncoat are synonyms defined as:

ratter and turncoat: a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

Other synonyms of ratter include apostate, deserter, recreant, renegade.

ratter (noun)	turncoat (noun)
any of several breeds of terrier developed to catch rats	a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
a disloyal person who betrays or deserts his cause or religion or political party or friend etc.