This is the 474th most frequent Estonian word.
ühiskonna
The Estonian word "ühiskonna" translates to "society's" or "of society" in English.
Here, 'ühiskonna' is the genitive singular form of 'ühiskond' (society), indicating possession or association with the members.
Ühiskonna liikmed peaksid hoolitsema üksteise eest.
Members of the society should take care of each other.
'Ühiskonna' in this sentence is used as an attributive genitive to modify the noun 'culture', showing the kind of culture being referred to (society-related).
Eestis on tugev traditsioonilise ühiskonna kultuur.
In Estonia, there is a strong traditional society culture.
'Ühiskonna' is used as a possessive to show that the 'development' belongs or pertains to 'society'.