Yes, they are terms used commonly in pokemon, as DT said!Sweeper: A Pokemon Who Can Hid Hard, and Fast, Usually has low Defense.
Staller: Always needs to have huge defenses and uses toxic/burn to weaken the opponet.
Thx for the complement on my site but for the next week I am going camping(No Computer Acesss:() and will not be on this site, or updating my own site. Sorry!:)