Why men are called Gentlemen and women as Ladies?

I know and u all know, Men can handle things in a gentle way in all aspects of life. They have this special touch, Be it a business meeting or be it an social party they know it. On the contrary when I tried to find the meaning of Ladies, in daily use tool MS-Word .., u would be surprised by the result I got, it told me “not found ladies” u will be flabbergasted with the words that it pointed to “lack of understanding” U know by now why we are Gentlemen as always J