The word "average" can be represented as a number, meaning a central value, in the middle of two measures, or meaning the sum of several numbers, divided by the total of those numbers. At this point, the word "average" can also be considered as an adjective, as it has the ability to characterize something or someone.
Finally, this word can also behave like a verb, representing a central value that a given system must achieve in a given period of time.