seeking a word each for the following 2 definitions

definition 1: "Using the same word to refer to many different things"
definition 2: "Using a word with a specifically understood meaning to refer to something with a different meaning."

anyone?

not-knowing ✹ 🍕-fan ✹ productive discomfort + idk ✹ Marseille / Singapore / Auvergne ✹ The Uncertainty Mindset (2020) ✹ now: vaughntan.org/now-ish

closest anyone's got so far is OVERLOADING for 1 and APPROPRIATION for 2

the words were for describing some impt ways we misuse "risk" and "uncertainty" — diagram below is work in progress ... https://i.imgur.com/EA4gd9q.jpg

actually, here are the updated 2 definitions for which i'm looking for words

definition 1: "Using one word with a specific meaning to refer to many different things with different meanings"
definition 2: "Using one word with a specific meaning to refer to something with a specific different meaning."

anyone?