Some expressions belong to more than one category.
Many people have grown tired of them, and see their continued use by others as a sign that they have little to say. Lazy writers and speakers use them as lazy cooks use ready meals from the supermarket, and they are just as unappetizing. If other people recognize what is going on, this kind of language can backfire. Job advertisements are a good place to see examples of pretentious language. Pretentious language in its turn overlaps with jargon.