What you call "Buzzwords" many would call technical jargon.
Jargon is a shorthand way of communicating quickly with others who understand it.
You see "Buzzwords" in are building every website in AJAX, MVC, REST, and HTML 5, where as I think "I wonder if the MVC is a front end Javascript MVC framework operating against the REST backend, or if the model & controller parts are shared by the REST and AJAX front ends, but have different views?"
I know you meant it as an example, but to me it was a perfectly legitimate description of a development stack.