You have likely heard the term trope used today in reference to common themes in popular media, especially movies and television, especially ones that are overused in each genre. In fact, there's a very popular website that's been around for a long time dedicated to finding and calling out these things, called TV Tropes, which I encourage everyone to get lost exploring whenever you can. Today's use of the word has taken on a negative connotation, but the true definition of the word trope doesn't have to always mean "lazy, over-used piece of writing."