The other day I noticed that a movie had Action and Suspense listed as its genres. This has been bugging me for a while now -- suspense is sometimes referred to as a genre of its own, though it is usually paired with something else. Action suspense. Romantic suspense. Mystery or horror. The movie in this case is John Wick, which could be more accurately described as a noir thriller in my opinion. I think of suspense more as a storytelling tool, not a genre of its own. Most good movies have suspense tied up in their conflict. Raw suspense is cheap, you have to pair it with something that has meaning, otherwise it's like clickbait, dragging the reader/viewer along without giving them a real payoff. It seems odd to think of this as a genre to me, but there could be some good examples that I'm not thinking of. Is suspense a genre? In particular, can it be a genre of its own, without being paired with something else like action? What's the difference between an action film and an action suspense film?