Correct. In terms of what "kind" of model it is, it's all just a variation of the same linear model, y = bx. That said, there are a lot of special consideratio

Correct. In terms of what "kind" of model it is, it's all just a variation of the same linear model, y = bx. That said, there are a lot of special considerations involved with timeseries data. There is a large number of specialized tools, techniques, and model families dedicated to time series modeling, which don't make sense to use for other kinds of problems. And all of those special time series tools exist to solve problems that do not arise in other modeling situations. So in practice, times series modeling is a distinct specialization from other kinds of modeling.