# What is the difference between LaTeX and MathJax?

This might be a silly question, but I am rather new to using LaTeX/MathJax, which I use to render chemical equations over at Chemistry SE. I tend to use the term LaTeX and MathJax synonymously, although I think that's wrong. Can anyone point me the difference between each?

• See also Comparing MathJax and MathML Jul 8 '17 at 10:13
• Maybe you'll find the above link informative. Against its title the answerer also explains what MathJax really is. For what's LaTeX you'll find a ton of definitions out there, mostly something like a markup language and document preparation system. Jul 8 '17 at 10:15
• Seems like the real difference is that LaTex works just fine on my machines, MathJax doesn't :-( I really don't understand why the developers think that it's a good idea to render text in black when the user has the background color set to black... Jul 8 '17 at 15:53

"LaTeX" is used in two senses, the name of a document markup language with syntax like \section{Intro} and \frac{a}{b} but also the name of the program that implements the processing of that language to produce typeset output.