Stability — is there a technical term in UX for this?

I am in the writing of a paper using Microsoft Word. I also write this Stack Exchange question and at both I have a good feeling about the user interface as only the sentence I write is changing, the whole background is constant, it is stable. It somehow suggests that these are reliable software.

Sometimes I encounter software that is not so - then I have the impression that the product I use is unprofessional.

Is there a technical term in User Experience for this stability?