No, figurative language is not used chiefly in expository persuasion.
Lobbying Fundraising Persuasion Direct contact with government leaders
Tools of persuasion are techniques or strategies used to influence the beliefs, attitudes, or behaviors of others. Examples include logical reasoning, emotional appeal, social proof, and credibility. These tools are often employed in advertising, marketing, sales, and public speaking to convince an audience to take a desired action.
persuasion is used to change how people think or act
It would take a lot of persuasion to agree to that offer
Newhart - 1982 Unfriendly Persuasion 5-17 was released on: USA: 2 February 1987
Arguments can be used for both explanations and persuasion. In an explanation, an argument is presented to help clarify or support a claim or position. In persuasion, arguments are used to convince someone to adopt a particular belief or take a specific course of action.
Brain Games - 2011 Power of Persuasion 2-5 was released on: USA: 6 May 2013
Rhetoric is the term used for the act of persuasion in general. It involves using language effectively to influence or persuade an audience.
The word "persuasion" appears one time in the KJV bible (Galatians 5:8).
Rhetoric
Rhetoric