Inbound links are the links spread over internet in blogs, web sites, social media sites, web 2.0 sites, forums or what ever the medium may be pointing back to your site. Most of these links are hidden through anchor text which is primarily a keyword or keywords on your niche. In your signature you are having two anchor texts so I do not understand why you are asking this question.
Backlinks are incoming links to a website or web page. Inbound links were originally important (prior to the emergence of search engines) as a primary means of web navigation; today their significance lies in search engine optimization (SEO)
Links pointing towards your website is termed as inbound links while the links that points towards other websites are called as outbound links
Inbound links drives you the link popularity to increase a site's total Page Rank, also to add more pages. For more to know on inbound links you may also refer http://hiox.org/2481-inbound-link--outbound-link.php
inbound links are those which point to your website. the quality of inbound links is directly proportional to the quality of the sites where they are placed.