What is a belief it not the highest-ranked hypothesis of all possible options? Obviously beliefs are more complex than that, since we have a default set installed in us as children, and only a subset of humans are taught the rational methods of improving those beliefs over time. I consider myself a member of that subset.

(Quoting Aristotle always puts me in the mood to rank things.)

I do believe a hypothesis to be different than a belief. A belief performs a different function than a hypothesis.

A hypothesis can be defined as a “proposition made as a basis for reasoning, without any assumption of its truth” (Oxford Languages definition). Typically a function you perform to unearth a truth.

A belief on the other hand holds some position on the spectrum of truth. To believe is to make an assertion about truth. A hypothesis is somewhat of a precursor to that.

But hey, regardless of our stance on the definitions of these words, I heavily jive with the idea that we should improve our beliefs over time and I have mad respect for Aristotle.

I don't think we disagree. A hypothesis is upgraded to "belief" and therefore to the "spectrum of truth" only because it's the best you know of, not because it's the only one. It's a matter of degree, not kind. And a belief's position as the best one is always precarious; it can be unseated at any time by a better hypothesis.

Axioms are different, but over time I've found that even those weaken and become "merely" strong beliefs (or, more usually, only True within the context you're working in, e.g. mathematics). Even "I think therefore I am" is not axiomatic, I have come to believe. In fact I doubt it's important to identify some sort of root cause, which is rationalist heresy. Oh well.