бързо

In a sentence

• Той бързо тича към автобуса.

  He runs quickly towards the bus.

  Here, 'бързо' is used as an adverb to describe the verb 'тича' (runs), indicating the manner in which the action is performed.

• Нека решим този проблем бързо.

  Let's solve this problem quickly.

  In this sentence, 'бързо' serves as an adverb defining how the action of 'решим' (solve) should be carried out, suggesting promptness.

• Бързо хранене не е най-здравословният избор.

  Fast food is not the healthiest choice.

  Here, 'бързо' is used as an adjective in the phrase 'бързо хранене' (fast food) to describe the noun 'хранене' (food), indicating the characteristic of being quick to prepare or consume.