bank bill vs bank note

bank bill and bank note both are nouns.

Word	Noun	Adjective	Verb	Adverb
bank bill	Yes	No	No	No
bank note	Yes	No	No	No

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

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

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

bank 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)