[spacemanaki]

I don't think they are both compilers classes. At many universities there's an undergrad class with "programming languages" in the name (principles of ..., paradigms of ..., etc). Compilers is often a separate, more advanced class, perhaps with the PL class as a prereq. Based on the syllabi the two classes seem to follow this tradition, with the Udacity class being the PL class and Coursera the compilers one.