Captions - audio content presented on-screen in short “chunks” of text, synchronized with the audio. Captions only display small pieces of the audio content at a time.
Closed audio description - allows users to turn the audio descriptions on or off.
Open audio description - the audio description is played automatically, and users cannot turn it off.
Transcript - enables users to access all of the spoken content of a video in text format.
Transcription - the process of converting audio content to text.
Web Content - refers to the information in a web page or application, including text, images, and sounds.
Source: WCAG 2 Overview
JAWS® (Job Access With Speech) - the most popular screen reader, made for use with the Microsoft Windows operating system.
RGB (red, green, and blue) - refers to a system representing the colors used on a digital display screen
Screen Readers - software programs that convert text into synthesized speech for people with no or low vision, who have trouble reading, or who have difficulties seeing a Web page. Screen readers may also include Braille output technology, allowing users to access information by touch to activate text reading.
Voluntary Product Accessibility Template (VPTA) - disclose vendors' conformance with accessibility guidelines
Web Content Accessibility Guidelines (WCAG) - international standards, documents explaining how to make web content accessible to people with disabilities.
WebAIM (Accessibility in Mind) - is a non-profit organization based at the Institute for Disability Research, Policy, and Practice at Utah State University.
WAVE- a free evaluation tool developed by WebAIM to help authors identify accessibility errors and facilitate the human evaluation of web content.