olevused

Could you provide some context for the term "olevused"? I’m not aware of a widely recognized topic by that name. Is it an Estonian linguistic term (perhaps related to existence), a philosophical concept, a cultural reference, or a fictional term? If you’d like, I can draft a neutral wiki-style stub about "olevused" with the intended scope (real-world concept, fictional term, or general placeholder) and clearly indicate the basis and sources.