Board Thread:General Discussion/@comment-30359282-20161029192215/@comment-26844381-20161029204937

HP is how much damage can the troop take

DPS (damage per second) is damage that the troop would deal every second.

Damage is the damage that the troops deals per hit to ONE troop

If the troop deals area damage, then it hit more troops than one. E.g. Bomber

I suggest you to visit the page Basics of Battle, there is lot's of info for new people.