AJAX
Technically: Asynchronous JavaScript and XML, in reality, this is usually referring to a task that runs in the background of a webpage without having to refresh the whole page.

CPT
Custom Post Type

Custom field
GeoDirectory custom fields allow extra information to be added to your listings, such as business opening hours, entry fees, phone, website link etc

Element
All GD widgets are also available as shortcodes or Gutenberg blocks. How you add a GD element will depend whether you add them to a page, or sidebar etc

Extension
Extra plugin that gives your GeoDirectory website advanced capabilities.

Frontend
The public part of your website, where users can add their listings and visitors can browse the site

GD
GeoDirectory

GeoDirectory Core
This refers to the main GeoDirectory plugin available from WordPress.org

Listing
Entry in your database for a business or event etc.

Location
Refers to cities (towns or villages etc), regions (states or provinces etc) and countries.

OSM
Open Street Maps. This is the name of a map provider.