Because listing all differences in detail would make this post too long and also because I myself is also learning differences along the way, I will try to add additional Common Lisp notes outside of this article to other future articles in Living with Emacs Lisp if possible.

Let’s skip many things that are either completely different between the two Lisps, or things that are completely non-existent in one Lisp. Differences that are most useful to know are usually things that are sort of similar yet not exactly same between two Lisps. For example, yes and no in English usually correspond to yeah and aniyo respectively in Korean, except when they are not, in which case yes corresponds to aniyo and no corresponds to yeah. This kind of difference can get you. Imagine Prime Minister of UK and South Korean President encountering a mysterious giant red button and discussing whether to press that button or not.