The words a person chooses and the order he or she puts them in while speaking is that persons?

The words a person chooses and the order they put them in while speaking is that person's diction.

Here's why:

* Diction refers to the choice and arrangement of words in speech or writing. It's a key element of style and can reveal a lot about a person's personality, education, and intentions.

* Syntax is the grammatical arrangement of words in a sentence. It's closely related to diction, as the order of words influences meaning.

So, while "diction" encompasses both word choice and order, "syntax" focuses specifically on the grammatical arrangement.