Noun to Adjective

Remove the last vowel or semi-vowel of the noun if there is, then add -a

Example:

Svod (Freedom) -> Svoda (Free)

Avtomatja (Automation) -> Avtomata (Automatic)

If the noun already has -a, then don't change anything

Example:

Vokrjenka (Army) -> Vokrjenka (Armed)