banker's bill vs bank note

banker's bill and bank note both are nouns.

Word	Noun	Adjective	Verb	Adverb
banker's bill	Yes	No	No	No
bank note	Yes	No	No	No

As nouns, banker's bill and bank note are synonyms defined as:

banker's bill and bank note: a piece of paper money (especially one issued by a central bank)

Other synonyms of banker's bill include bank bill, banknote, bill, Federal Reserve note, government note, greenback, note.

banker's bill (noun)	bank note (noun)
a piece of paper money (especially one issued by a central bank)	a piece of paper money (especially one issued by a central bank)