This is the 399th most frequent Bulgarian word.
българското
"The Bulgarian" or "Bulgarian" (definite form).
'българското' is used as a definite form of the adjective referring to 'the Bulgarian (flag)', highlighting its specificity.
Българското знаме е съставено от три цвята.
The Bulgarian flag is composed of three colors.
'българското' here represents 'the Bulgarian (yogurt)', used as a definite form of the adjective emphasizing identity.
Обичам българското кисело мляко заради уникалния му вкус.
I love Bulgarian yogurt because of its unique taste.
'българското' functions as a noun, signifying 'the Bulgarian (culture)', generalizing the idea into a subject of discussion.