It's not, and anyway lisp is not only a language but a category in which you can put the racket, closure and probably other.

Also for the lisp fans here: I'm working on bank data with python since March 2021. My app was deployed in the last month, and a new requirements appeared a week ago. The only way i found to satisfy this requirement and to keep it scalable (aka the code stay generic, only the configuration file change when it's used by new application) is to basically transform json into a pseudo-lisp without symbols and with a really, really long composition chain.

I have to basically write a small lisp compiler. I was gonna end this mission but this became fun again.