What does ADA mean? or WCAG?
Digital accessibility has it's own language of terms and acronyms. Best practice is to explain or expand terms when they are used and to use clear and plain language.
However, you may not always remember a term's meaning, or another site may not follow these best practices.
Give it a try:
You can use UTMB's Digital accessibility acronyms, glossary, and usage page to find out more about common accessibility terms.