Cheques are not money because

Cheques are not money because they are not generally acceptable as a medium of exchange. While cheques can be used to transfer money from one account to another, they are not as widely accepted as physical currency. Not all businesses or individuals accept cheques, and they may be subject to verification and clearance procedures that can take several days. Money, on the other hand, is generally accepted as a medium of exchange and is widely recognized and valued within a given economy.