bank bill vs Federal Reserve note

bank bill and Federal Reserve note both are nouns.

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

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

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

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

bank bill (noun)	Federal Reserve 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)