Italics: a font style so bold, it's like the writer is yelling at you, but not really, because, you know, they're just trying to convey emphasis, but not really, because, you know, they're just trying to be dramatic, but not really, because...
But in all seriousness, italics are a type of font style where the text is slanted, like a drunk person trying to walk in a straight line. It's like they're saying "look, I'm a professional, I'm just going to lean in like this and hope nobody notices my lack of actual skill".
So, if you're feeling fancy, and you want to make your text look like a kindergartener's scribbles, then italics are for you!
But wait, there's more! You can also use italics to indicate emphasis, like when you're trying to say "oh, this is important, I swear, pay attention!" but really you're just trying to be dramatic again.
And, if you're feeling really extra, you can use italics for both purposes, because why not, right? It's like, "look, I'm a font style expert, I'm just going to use italics for everything, because, why not?!"