What are the two sides of a debate called?

For a debate there are two sides, or two teams; affirmative and negative.

For the English style there are three people in one team:

First proporsition / opposition

Second proporsition / opposition

Third proporsition / opposition

First prop / opp talks about the outline of the team; second prop / opp gives details and a bit rebuttal; third prop / opp rebuts all the way through.

For the American style there are four people in a team:

The first person does the opening and introduction;

The second person gives details and a bit of rebuttal;

The third person asks five questions to the other team and the other team's third person answers them, then asks;

The fourth person sums up and concludes.