Well there are many things in life to learn. One of them is Marketing concept. They can be made so simple by giving simple and beatuiful illustration as below.

Marketing concepts

You see a gorgeous girl at a party. You go up to her and say,
"I'm very rich. Marry me!"
----That's Direct Marketing.

You're at a party with a bunch of friends and see a gorgeous girl.
One of your friends goes up to her and pointing at you says,
"He's very rich. Marry him."
----That's Advertising.

You see a gorgeous girl at a party. You go up to her and get her telephone number. The next day you call and say, "Hi, I'm very rich. Marry me."
----That's Telemarketing.

You're at a party and see a gorgeous girl. You get up and straighten your tie; you walk up to her and pour her a drink. You open the door for her, pick up her bag after she drops it, offer her a ride, and then say, "By the way, I'm very rich. Will you marry

me?"
----That's Public Relations.

You're at a party and see a gorgeous girl She walks up to you and says, "You are very
rich.."
----That's Brand Recognition.

You see a gorgeous girl at a party. You go up to her and say, "I'm very rich. Marry me" She gives you a nice hard slap on your face.
----That's Customer Feedback !!!!!

You see a gorgeous girl at a party. You go up to her and say, "Im very rich. Marry
me!" And she introduces you to her husband.

----That's Demand and supply gap.

You see a gorgeous girl at a party. You go up to her and before you say, "I'm very
rich. Marry me!" She turns her face towards you ------------ she is your wife!
----That's threat of entering into new markets.

You see a gorgeous girl at a party. You go up to her and before you say, "I'm very rich, Will you marry me?" Somebody else says the same before you and Takes her away.
----That's competition eating your market share.