faasitilaa
Could you clarify what you mean by "faasitilaa"? I’m not sure which domain or definition you have in mind. For example, in physics and chemistry there are concepts related to phases and phase space, while in other contexts it could refer to something else entirely (a term in linguistics, culture, or a fictional concept).
If you intended the Finnish term for a physics/thermodynamics concept, I can draft a concise, neutral wiki-style