Style

The fourth canon of rhetoric. "Style involves sentence composition and the use of ornanments or themes to enhance arguments."

Ornaments
"Figures of Thought involve artful changes in ideas, feelings, or conceptions; these figures depart from ordinary patterns of moving an argument along."

Figures of Language involve using patterns in speech/language to craft an argument that meets your goals. This ornament involves the use of concepts such as repetition or juxtaposition to place emphasis on key elements of the argument.

A trope is any substitution of one word or phrase for another. They are most commonly seen through the use of irony, metaphors and smile.