stereotype in simplest words means what most people think of something, and they are sometimes not correct
like for an example “women are stereotypically thought as weak“ means most people think women are weak, and that might be true but that doesn’t mean ALL women are weak
hope this clears that up for you ^^
Cliché
a phrase or opinion that is overused and betrays a lack of original thought.
It's not really the same, but it kinda is. Stereotype is what people usually to think or do, like the comments above "women are stereotypically thought as weak". But cliché is being used more to a story, so this means like a typical love story that consist a pair and then they fought and the man cheat but they got back together anyways, or someone got into an amnesia. So that's cliché.
This is what I understand the words as, so if you're still not getting it i'm sorry
Smh it's too peaceful....I'm afraid