Hi Friends,
inbound links
inbound links are all of the links on other websites that direct the users who click on them to your site. Inbound links can significantly improve your site's search rankings, particularly if they contain Anchor Text keywords relevant to your site and are located on sites with high Page Rank.
Outbound links
Outbound links are all links from a particular your website’s web page that lead to other pages, including pages in the same domain. An excessive number of outbound can be harmful for your website, because a Spider may perceive it as a Link Farm.