'Feature' definition

Question

Precisely, what is a feature? Is it an attribute/property name or its value?

E.g. would features examples be "name", "adress", ...? Or "Dorothy", "123 YellowBrick Road"??

If it is a property name, what do you call its corresponding values? ("Feature-values"?)

If it is a value, how do you call its corresponding property name?

In the texts I read, it seems the meaning is interchangeable and depends on context.