defined by the Negotiable Instruments Law, an unconditional promise in
writing made by one person to another, signed by the maker, engaging to
pay on demand or at a fixed or determinable future time a sum certain
in money, to order or to bearer.
promissory note and the bill of exchange (draft and check) are the instruments
encompassed by the Negotiable Instruments Law, Under the Uniform Commercial
Code, by contrast, the broad term "commercial paper" encompasses drafts,
checks, certificates of deposit, and notes.