First - not trying to change anyone’s mind - I just enjoy the discussion.
Having said that, I can discern a big difference between what are my opinions and what are my beliefs. Maybe that’s the difference here.
For me, a belief is something I hold that, as far as I am concerned, is unshakable (that is, until it is shook - but it would take one hell of a shake)
Everything else is opinion, preference, like, love, etc., whatever you want to call it. Things that can change much, much easier than any of my beliefs. Things where I can choose this today, and change my mind and choose that tomorrow.
But if we can’t discern opinions from beliefs, let’s go with that - whatever one believes, no matter how deep or shallow, is a “belief.”
- I believe I beleive the color blue to be a superior color to yellow. (Lying - it’s green all the way)
- I believe the Earth is round.
- I believe in God, even though I equally believe I have absolutely no understanding of God and nor does anyone else.
The first “belief” is something I could choose to change in the next second or hour or day or week.
The second “belief” I could no more choose to change than I could choose to be a T-Rex when I wake up tomorrow. (though I gotta admit, that would be AWESOME!!!) If you say I “chose” to believe it, well, that’s just not true. I was (and am still) compelled - by the evidence I accept as true - to believe it. I had absolutely no choice in the matter if I were to stay true to myself. (interestingly, a true, never gonna change flat-earther could say the exact same thing and they would not be wrong - about the concept of “choice” in this particular belief, that is. About the earth, hoo-boy.)
Then there are all kinds of “beliefs” that sit in the gray area of this topic. That’s the third one. That discussion gets waaaaaaay too deep and shan’t be had here!
Having said all that (and I realize it was a lot - I can get wordy), Personally I do not think all three of the above examples are what I would call “beliefs.”