Trope

Since children are more scared than amused by clowns, I wonder if some comedy trope of ours will become horror fodder in 100 years.

Source: tatoeba (704562)

Airships are a common trope in steampunk works.

Source: tatoeba (6168058)

You have to give director Colm McCarthy, a Scottish TV veteran making his feature film debut, and writer Mike Carey, adapting his own novel, credit for attempting the seemingly impossible task of doing something new with the zombie subgenre. And by blending it with the common YA [young adult] trope of a young female protagonist who leads the world into a new revolutionary era, they almost get there—largely thanks to newcomer [Sennia] Nanua, who presents her character's grappling with complex themes of identity and original sin with a childlike guilelessness.

Source: wiktionary

They have completely supported the Russians diplomatically, they’ve abstained in key votes at the United Nations, they’ve absolutely cynically repeated all the Russian tropes, particularly in places like Africa and Latin America – [by]^([sic]) blaming Nato and all of this stuff.

Source: wiktionary