kwebtoon1-1, Exercise 1: The words

Model answer:

Manhwa (만화): the general Korean term for comics and print cartoons; outside Korea it usually means Korean comics.
Webtoon (웹툰): a type of episodic digital comic that originated in South Korea, usually meant to be read on smartphones.

Three traits (any three): each episode is one long vertical strip (an "infinite canvas"); some have music and animation; usually in colour because they are published digitally; made to be read on a phone or computer by scrolling.

The word: first coined on 8 August 2000 by Chollian, one of South Korea's oldest (now discontinued) internet service engines, per the Manhwa article. It is a portmanteau of web and cartoon.

Sources: Wikipedia, Manhwa; Webtoon.