The term 'SMALL BILL' is composed of four words, each with three or six letters. The first word is 'ONE', which is a number that represents the singular form of a unit. The second word is 'DOLLAR', which is a unit of currency used in many countries around the world. The third word is 'INV', which is an abbreviation for the word 'INVOICE'. The fourth and final word is 'WATSON', which is a surname of English origin. Together, these words form the phrase 'small bill', which is a term used to describe a relatively small amount of money owed for goods or services.