Grande and Gran

Or how to say that something is great or great big.

Both Gran and Grande mean Grand.

 Gran means grand in the sense that something  is super duper. Gran comes before the noun.

Grande means grand as in big. Grande comes after the noun.

All of this can be kept in order like this:

Gran practically looks like the word Grandma...who you should always  let go first at everything because she is so grand.

Grande means big which is something that they need to tell a famous coffee shop because their smallest drink is called a grande. Perhaps the grande part is referring to the price which is so high that you can only go  there after payday.