The distinction between GROUPS and TEAMS is quite clear. A GROUP is a CLUB of MEMBERS. A subset of these members can dynamically form a SQUAD - from which a TEAM is selected for a specific Team Match (set of games). The Team is fixed before the Team Match starts.
With Vote Chess, by contrast, the composition of the team can change dynamically throughout the match.
These threads shed more light on the distinction between Groups and Teams:
first-come-first-served-team-chess
improving-team-matches-draw-the-line-between-group-and-team
What's the difference between a group and a team? Any ideas on what a good one for a ~1450 would be? Thanks :)