AJAX: Asynchronous Javascript and XML.
  - used to make calls to grab JSON or XML.
  - way of getting info from API to JS.
  - created for JQuery
    - jquery still used for 90% of websites
    - introduced in the 90s to standardize browsers
  - ajax is a term used as a broad term for 'web request'. Similar to 'coke' and 'cola' even when its not actually coke
    you're drinking.

Axios: Library for AJAX calls that isn't jquery (since jquery is on it's way out)


Asynchronous JS:
  - allows two things to happen at same time
  -