noun, verbal noun
There is much deliberation and theory exchanging when you are trying to present an argument. Of course, it's a very nice one. Lots of thinking and stuff, you know? That's why there's deliberation and theories instead of just screaming. That kind of "argument."
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
Koichi and the others are discussing whether we should take a plane or a boat to Japan.
The article that Michael wrote drew controversy.
Koichi and Viet argued on what to eat for dinner for hours without reaching a decision.