This is the 955th most frequent Czech word.
oblastí
The Czech word "oblastí" means "areas" or "regions" in English (genitive or instrumental plural form of "oblast").
Here, 'oblastí' (area) in singular instrumental case describes the geographic domain of origin.
Oblastí původu tohoto druhu je jihovýchodní Asie.
The area of origin for this species is Southeast Asia.
In this sentence, 'oblastí' signifies distinct areas or topics of discussion, again in its plural form and referring to domains of interest.
Po projednání více oblastí dospěli k rozhodnutí.
After discussing multiple areas, they reached a decision.
Here, 'oblastí' (fields) is used in the genitive plural, referring to specific domains or areas of science.