order of payment vs bill of exchange

order of payment and bill of exchange both are nouns.

Word	Noun	Adjective	Verb	Adverb
order of payment	Yes	No	No	No
bill of exchange	Yes	No	No	No

As nouns, order of payment and bill of exchange are synonyms defined as:

order of payment and bill of exchange: a document ordering the payment of money; drawn by one person or bank on another

Other synonyms of order of payment include draft.

order of payment (noun)	bill of exchange (noun)
a document ordering the payment of money; drawn by one person or bank on another	a document ordering the payment of money; drawn by one person or bank on another