Question

What is the difference between a rendering engine and a browser engine?

Answer 1

A rendering engine is the engine that a browser uses to render the html (i.e. gecko vs webkit).
A user agent is how a browser identifies itself (i.e firefox 3.5).

Answer 2

Explanation:

Rendering Engine : Basically, is a software to form the images and the texts for printing and displaying. This only responsible for displaying the content you are requesting and also responsible for parsing the HTML and CSS which display the parsed content. It is basically a tab in chromium. It forward the request of the content to the browser engine then the browser engine will work on it.

Browser Engine : It marshals and arranges the actions or work between the rendering engine ans UI and is also known as layout engine. It is used to transform the web page resources to an user's device's interactive visual representation.