Depending on the size of the refactor, the lines between it and "rewrite" start to blur, so I'm just going to consider what I'm doing right now at my job a big refactor of how the data is stored and read, even if it involves making some big changes to the database models and how they are interacted with.

Really, it's pretty much a rewrite of the database handling code but hey, that won't impact how the data is sent through the endpoints so the interface didn't change. Refactor!