I assume you mean the interregnum between Ottoman control (1918) and the establishment of the State of Israel in 1948. If so, the English word would be "Palestine". Throughout the late 19th and early 20th centuries, thousand of Jews emigrated to Palestine and started forming an internal micro-national state they called "Israel", but the state of Israel was not proclaimed until 1948.

I'm confused. Was pre-state of Israel not called Palestine for quite a while? Or are we looking at terms like Lavant which is more general and used in a historical way? I'm definitely missing something, maybe a technicality.

Edit: There was a comment earlier to mine, and I had written the following response to try to understand the question.

I understand that the term Israel is old (in Hebrew sounds more like 'Yisrael") . It must be the phrasing of the question that's confusing me. Is the question similar to what were the popular beliefs of where the ancient/biblical Israel existed and what do we know today?