Added definitions section

Author: schnuerle

general-information.md

@@ -6,6 +6,7 @@ This document contains specifications that are shared between the various MDS AP
 
 * [Beta Features](#beta-features)
 * [Costs and Currencies](#costs-and-currencies)
+* [Definitions](#defintions)
 * [Devices](#devices)
 * [Propulsion Types](#propulsion-types)
 * [Responses](#responses)
@@ -38,6 +39,16 @@ If the currency field is null, USD cents is implied.
 
 [Top][toc]
 
+## Definitions
+
+Defining terminology and abbreviations used throughout MDS.
+
+- **API** - Application Programming Interface - A function or set of functions that allow one software application to access or communicate with features of a different software application or service. 
+- **API Endpoint** - A point at which an API connects with a software application or service.
+- **PROW** - Public Right of Way - the physical infrastructure reserved for transportation purposes, examples include sidewalks, curbs, bike lanes, transit lanes and stations, traffic lanes and signals, and public parking.
+
+[Top][toc]
+
 ## Devices
 
 MDS defines the *device* as the unit that transmits GPS or GNSS signals for a particular vehicle. A given device must have a UUID (`device_id` below) that is unique within the Provider's fleet.