Estonian
Case suffix
-na
- Forms the essive case.
Usage
The suffix is appended to the genitive stem or an appropriate plural stem.
Finnish
Case suffix
-na (in words with back vowel harmony)
-nä (in words with front vowel harmony)
- Forms the essive case.
Usage
The suffix is appended to the same stem as the illative suffixes, and also the partitive singular often uses the same stem.