Definition: The ability to perform a task or function; that set of functions that something is able or equipped to perform.

Alright class, settle down now, let’s take a look and see, At the word “functionality,” it’s important for you and me! Now, the dictionary gives us a helpful little clue, About what this word really means, shiny and new. It says "the ability to perform a task or function," that's true, Like a machine doing something, just for me and you! Think of a button on a device so neat, Pressing it makes something happen, can’t be beat! And then there's this part, “that set of functions,” don’t despair, It means all the things a thing can do with care. Like a car has brakes and steering, that’s its functional might, Or a computer has programs – shining ever so bright! So essentially, "functionality" is about what something does , you see, Its capabilities and features, for all the world to decree! Do you have any questions? Let's discuss with glee!