Chess assistance = using a computer program i.e. stockfish
Artificially inflate or deflate rating = Usually people resign games to deflate their rating then enter tournaments to troll or get people to berserk them. There are also people who inflate their rating but using multiple accounts to dump rating points to their main account to inflate their rating.
Chess assistance - is where you use in engine
Artificially Increase/Decrease rating - is when you either lose games on purpose or even bribe someone to let you win games against them
