What are the current useless terms in this "audio world"


Throughout the history of marketing of all kinds of consumer goods there have been many useless, hyperbole phrases and words used.  It seems on ebay, here, craigslist and others a current pet of Sellers is taking something to "the next level"....  which sounds like a great marketing term for an elevator maker.   
 


jusam
 "I would much rather they compare the velocity of a tweeter's diaphragm with an unladen swallow."

Would that be an African swallow or a European swallow?
My fear is that the Swallow being referred to is the common Barn Swallow.....what an "8-track" of birds.......

barn swallow - Google Search
Don’t be silly. Everyone knows its an unladen swallow. The only question is African or European?   
https://youtu.be/0D7hFHfLEyk?t=165
JS Smith, I think you forgot one... grainy.

  It use to be that an 18" subwoofer could not delineate the upper bass very good because it was to big (hence slow)-- it couldn't come back to it's starting point 'fast' enough to transduce the next note.
Because of that 'pitch definition' was lacking.  Seems fast is ok...