The skill or art of speaking—techniques used to persuade, entertain, or influence an audience; conversational or rhetorical skill.
彼は話術に長けているので、プレゼンがとても上手だ。
He is skilled in speaking, so his presentations are very good.
話術だけで人を動かすことはできない。
You can't move people by speech alone.
彼女は話術を駆使して顧客を説得した。
She used her conversational skills to persuade the customer.