This is the 513th most frequent Ukrainian word.
нової
"New" (genitive or accusative singular feminine form).
'нової' is used here in the genitive singular feminine form, corresponding to the noun 'сукні' (dress) in the genitive case, denoting possession or something related to the noun.
Моя сусідка купила нової сукні.
My neighbor bought a new dress.
'нової' is in the dative singular feminine form, agreeing with 'яблуні' (apple tree), used in the dative case to indicate the receiving entity of an action.
В саду прив'язали гамак до нової яблуні.
In the garden, they tied a hammock to the new apple tree.
'нової' is used in the genitive singular feminine form, agreeing with 'картини' (painting) which is also in the genitive singular due to its use as the object of admiration.