Data comes in two flavors: Numeric and Categorical. Numeric data is easy, it’s numbers. Categorical data is everything else.
As the name suggests, categorical data is information that comes in categories—which means each instance of it is distinct from the others. Names are an example of categorical data, and my name is distinct from your name. On the unlikely chance that your name is the same as mine, I’m sure our government-issued ID numbers, phone numbers, and email addresses are distinct—which are also categorical data.
Source: What Is Categorical Data?, an article by Ryan Wright.