Korean adjectives are frequently used in daily conversation.
In Korean, they are used as both 'noun modifier' and 'descriptive verb'.

The basic form of all adjectives ends with '-다'.
It conjugates like verbs.
ex. 좋다 / 좋 is stem, 다 has to be deleted when conjugate.

1) Noun modifier
stem : final consonant X - use ㄴ
stem : final consonant O - use 은
-있다/없다 adjective - use 는
2) Descriptive verb
stem : vowel ㅗ orㅏ - use 아요
stem : vowel not ㅗ or ㅏ - use 어요
-하다 adjective -해요

You can download the PDF file here
https://drive.google.com/file/d/1903V...