Is there any difference between marketing and hawking? If there are, please give some of the differences?

The differences are simple :

1)    One (marketing) uses the Media (such as T.V., billboards, newspaper, radio, brochures, flyers etc..)  to promote the products, the other (hawkers) promotes it by themselves by shouting their products in the streets.

2)   Marketing has the possibility of reaching its prospective buyers all over the world, while hawkers have the access to reach the people who are only visiting their streets for their individual needs.

3)   Marketing can be done in a varied forms of attractive publicity (as mentioned in point1),  whereas hawkers are in their very raw form of attracting public attention, as it depends on the person promoting the product.

4)  Marketing is the tool used to sell high quality / branded products which may or may not be expensive, whereas hawkers are generally from lower class of the society.  Therefore, the quality and price may be comparatively lower and cheaper or which can be accessed by people who are not looking a quality and just for a product to satisfy the immediate needs.

5)  Marketing is a professional way of promoting / publicising your services and products, whereas hawkers are generally not considered professional, since it involves shouting their voices out to people.

 

 

If you're only shouting out to tell people what you're selling, that's just hawking; but if you're shouting out to tell people the reasons to buy what you're selling, that's a form of marketing, albeit in the most basic sense of the word.
In the formal sense, this only covers the Promotion bit in marketing.
In addition to Promotion, marketing also constitutes Product Development, Pricing and Product Placement.
That said, anyone who is selling anything is doing all of these things one way or the other, so in that sense a hawker is also a marketer.