To change a descriptive verb into an adjective, we can do the following ~
Verb stem (ending in vowel) + ㄴ
Verb stem (ending in consonant) + 은
작다 –> 작은 small
바쁘다 —> 바쁜 busy
바쁜 사람이에요 He’s a busy person
지독한 날씨이예요 Awful weather
더 큰 꽃병 있어요? Do you have a bigger vase?