The two types of clichés
Phrase cliches operate at the sentence level: 'at the end of the day,' 'heart of gold,' 'blood ran cold.' Situation cliches operate at the story level: the orphan who discovers they are secretly special, the mentor who dies to motivate the hero, the love triangle resolved by tragedy. Both erode reader trust, but in different ways. Phrase cliches make your prose feel lazy. Situation cliches make your plot feel predictable. You need a different diagnostic for each, because searching your manuscript for worn-out language will not catch a worn-out structure.