Jjang (Hangul: 짱): in manhwa with gangs, the boss often the best fighter in the school.
kkomaengi (Hangul: 꼬맹이) is an art style greatly resembling chibi style of Japanese manga. The main difference is the characters in chibi style are two heads high while characters done in kkomaengi style are three heads high.
Manhwa (Hangul: 만화, Hanja: 漫画) Outside of Korea, manhwa usually refers to a Korean comic book.
Manhwaga (Hangul: 만화가, Hanja: 漫画家) is the Korean word for a comic artist or cartoonist. Outside of Korea, manhwaga refers to the author of the manhwa, who is usually Korean.
Sonyun Manhwa (Hangul: 소년만화): A manhwa demographic age group covers young boys.
Sunjung Manhwa (Hangul: 순정만화, Hanja: 純情漫畵) is a genre of manhwa. It's romance manhwa.
Episode: It's the webtoon term for a story arc which covered over several chapters.
Season: It's the webtoon term for a overarching story arc that has several episodes.