This is the 1207th most frequent French word.
ukrainien
Ukrainien: Ukrainian (relating to Ukraine or its people, language, or culture).
The word 'ukrainien' is used here as a noun, representing the Ukrainian language.
Je parle ukrainien couramment.
I speak Ukrainian fluently.
Here, the word 'ukrainien' is an adjective, describing the nationality of the student.
C'est un étudiant ukrainien.
He is a Ukrainian student.
In this instance, 'ukrainien' serves as a noun, identifying the Ukrainian language in a linguistic context.