How to use facebook pages to promote my keyword?

You can use Facebook to promote your business, products, brands or you can share content also. You can't promote your keywords through Facebook

You can promote your article through Facebook pages ans in articles you can use your keywords,While sharing your articles you can give keywords as a title on the facebook....

you can't promote keyword by using facebook fan page.

You can't able promote any keywords using facebook fan page. You can get traffic for your website.

You can not promote your keyword on Facebook  page you only get more and more traffic on your website.

Recent promotional as well as marketing company growing very well in the market. Face book is best and very effective social networking site to promote your keyword and product. Promotional product marketing is also good way to promote your page as well as site.