ADA is not only a name but a common
acronym as well.
Some uses
include:
American Dental Association
American Diabetes Association
Americans with Disabilities Act of 1990
Audio Design Associates
Automatic Data Acquisition
Average Daily Attendance
Another Damn Acronym
The latter, and my favorite, actually appeared in a 10 page list of computer acronyms (including FUBAR, SNAFU, and NFG) handed out by my College Professor in the Computer Systems Technician program I took at University College of the Cariboo.
These and many more acronyms can be found at www.acronymfinder.com