And, one interesting thing about these links are they are very basic and their basic definition was never put in a basic way and even after researching I didn’t find the definition about them instead I found articles through which I can increase no follow & do follow back links.
Differences between them
Quality Content is King, but link building is God. – Vinay Goud (famous blogger @alltechtricks)
What is a no-follow link?
A no-follow link only allows a visitor to view your blog and not search engines which way you would not get much benefit in Search engine ranking through that link.
What is a do-follow link?
These links are both easy and difficult to get because many sites would not entertain page authority to be passed through their site to yours, but you can target blog directories for getting do-follow links for your site.