Mockup Vs Prototype. The prototype will look very similar to a mockup but elements of interactivity will be added using ux tools like invision and sketch not actual code. In fact they are only needed to demonstrate the design and are full size images of your future website.
Insightful discussion on quora about the difference between wireframe mockup and prototype here another discussion on the same topic here. Unlike a wireframe a mockup looks more like a finished. Below you can see the major difference between wireframes and mockups.
Also if you want to check out some great mockups you can go to dribbble.
The prototype will look very similar to a mockup but elements of interactivity will be added using ux tools like invision and sketch not actual code. The key difference between mockups and prototypes is that mockups are not interactive. While prototype wireframe mockup are used synonymously each plays its role in the software development process. One picture is more than a thousand words.