Factorial
Part of speech: noun
Definition: The result of multiplying a given number of consecutive integers from 1 to the given number. In equations, it is symbolized by an exclamation mark (!). For example, 5! = 1 * 2 * 3 * 4 * 5 = 120.
Product
Part of speech: noun
Definition: A commodity offered for sale.The amount of an artifact that has been created by someone or some process.A consequence of someone's efforts or of a particular set of circumstances.A chemical substance formed as a result of a chemical reaction.A quantity obtained by multiplication.Any tangible output or service that is a result of a process and that is intended for delivery to a customer or end user.The outcome or 'thingness' of an activity, especially in contrast to a process by which it was created or altered.A hair product, a hair care product – a preparation used to style hair and offered for sale.Illegal drugs, especially cocaine, when viewed as a commodity.
Example sentence: I call Alibaba '1,001 mistakes.' We expanded too fast, and then in the dot-com bubble, we had to have layoffs. By 2002, we had only enough cash to survive for 18 months. We had a lot of free members using our site, and we didn't know how we'd make money. So we developed a product for China exporters to meet U.S. buyers online. This model saved us.