What does the mean and to use in a sentence?

It seems like you're asking about the words "mean" and "to," not "to use." Here are some examples of how to use them in a sentence:

Mean:

* Definition: To intend, to signify, or to have a specific purpose.

* Example: "What do you mean by that?"

* Example: "The red light means stop."

To:

* Definition: A preposition indicating direction, purpose, or recipient.

* Example: "I'm going to the store."

* Example: "I gave the book to my friend."

Let me know if you had something else in mind, or if you'd like more examples!