This is the 430th most frequent Serbian word.
ова
"Ова" means "this" in English.
The word 'ова' is used here as a demonstrative pronoun indicating 'this' with feminine noun 'књига.'
Ова је моја књига.
This is my book.
The word 'ова' describes the noun 'торта,' which is feminine and singular, showing proximity and specificity.
Да ли ти се свиђа ова торта?
Do you like this cake?
Here, 'ова' refers to 'девојка,' again as a demonstrative adjective for a feminine and singular noun.