I am puzzling over Korean verbs again. Some day I will “get it”. Today isn’t that day.
Korean verbs are classified into four categories: action, state (or description), existential, and the copulas. I made a visit to Grammaropolis and refreshed my memory of verbs.
1. Action or processive verbs involve some action or internal movement.
2. Stative or descriptive verbs are sometimes called adjectives. They depict situations that are static and unchanging (at least temporarily).
3. Existential verbs convey the existence of something, or its presence in a particular location or a particular being’s possession. 있다 “to exist” and its opposite, 없다 “not to exist.”
4. Copulative verbs allow a non-verb to take verbal endings. The affirmative copula is 이다 “to be,” and the negative copula 아니다 “not to be.”
Copulative and existential verbs are subsets of stative verbs.
There is an online Korean verb conjugator and free app for your phone.