A mobile responsive website is a website that is designed to adjust its layout and content to best fit the screen size of the device it is being viewed on. This ensures that users have a positive experience regardless of whether they are viewing the site on a desktop computer, tablet, or smartphone.
A static website is one that is built using HTML and CSS code that is not editable by the user. A responsive website is one that is built using HTML and CSS code that is editable by the user.