internal and external link

[zaibnisa5000]

What is difference between internal and external link? which one is increase backlinks?

[jackar56]

An external link is a hyperlink that points to another website on the internet, typically on another domain from the current website. External links on your site become backlinks for the sites you link to. And many sites are more likely to link to you if you link to them first.
Internal linking pass link juice one website to another one as well as page views which increase your web visibility across the web.