Master/Owner/Dominant

Is there a difference between these words? Does one have more meaning then the others? Personally, I use them interchangably. Others might not. I think it all depends on your own relationship.
When I call Master by His titla, or I call Him my Owner, I am using it as a term of respect, of caring, of devotion. But, what does it mean to be a Master (or Mistress)? Having been on both sides of the collar, I think I can give a little insight as to what, to many, it means.
To me, being a Master or Mistress means that You accept the responsibility given to You. One accepts, when accepting the title from a willing submissive, responsibility for the submissive's mental and emotional well being. For their physical welfare, both in and out of any play time. One accepts the devotion and caring. You accept the responsibility of being the person's protector, and not just in a physical sense, but also in an emotional and mental sense. You are the one the person will turn to in times of need, pain, suffering, and angst.
But, also, You are the one the person will turn to in times of joy and success. The submissive's success is also, in part, Your success. Their happiness, Yours also.
Many young "Doms" today only see the control aspect of the relationship. They see a submissive, one who may be too naive to know better, as a doormat to be controled and neglected. A true Dom, worthy of the title Master, is one who shows self-control, self respect, compassion, gentleness when needed, sterness when warrented as well.
The title is not given easily or willy nilly. It can only be given of the submissive's free will, to one he or she deems worthy of the title. If accepted, the Dominant who accepts it must do so willingly, of His or Her own free will, accepting all that is offered with the title.
The little things that are done to show devotion by the submissive or to show care by the Dominant are just nice little perks! :)