Some of us can't watch the market all day long. We have to trade off EOD charts. We have to spend a lot of time on risk management to deal with overnight gaps. Thats swing trading.
Also some people are forced to trade within the PDT rule (applies only to stocks), which says you can't have more then 3 day trades in a five day window, or your account is frozen for 90 days. The PDT rule doesn't care if have profits or not, if you close a position the same day you open it, you it is a daytrade, and counts against you. IB has a little running counter on TWS that tells you how many daytrades you have left.
You can make a loose relationship between the time frame on your charts and the trade:
1 min - 5 min charts: scalping -- average trade: measured in minutes
15 - 30 min charts: daytrading -- average trade: hours
60 min charts - daily charts: swing trading -- average trade: days
weekly charts - monthly charts: position trading -- average trade: measured in weeks.