Functions are a way to combine operations into a higher logical level. Functions are like tiny machines, each with a specific purpose.You can combine these tiny machines together to form a much bigger machine that does something bigger than what each of the functions is capable of.

In short: functions are pre-built Lego useful blocks that can be combined to make a bigger structure!

Variables are containers (boxes) where we store different kinds of value in case we want to look them up later.