This is the 786th most frequent Czech word.
ukrajinský
"Ukrajinský" means "Ukrainian" in English.
The word 'ukrajinská' functions as an adjective to describe the noun 'vlajka' (flag), indicating its origin.
Toto je ukrajinská vlajka.
This is the Ukrainian flag.
'Ukrajinskou' is the accusative singular form of the adjective 'ukrajinský', modifying the noun 'kulturu' (culture), showing the affiliation of the cultural domain to Ukraine.
Mám rád ukrajinskou kulturu.
I like Ukrainian culture.
Here, 'ukrajinský' is an adjective modifying the noun 'prezident' (president), specifying the nationality or association of the president.