istota

1. being (living organism)
2. being (unreal thing with human or animal characteristics)
3. essence (most important and fundamental thing about something)
4. essence, being (totality of features that constitute being someone or something)
5. (obsolete) certainty (sureness of one's belief)
6. (obsolete) matter (that which constitutes the body)
7. foundation
8. security, guarantee, assurance; reliability; protection
9. security, guarantee, assurance; reliability; protection
10. existence
11. property, estate