ACTUALLY...and this is just my opinion...it is ANYTHING you do to attract deer, PERIOD! I don't care if it's a salt lick, a doe decoy, CREATING a funnel, planting food plots, using scents and sounds...WHATEVER. To me, it's all the same. The point is to lure deer into coming to you by ALTERING what would naturally occur IF YOU WEREN'T THERE.
How about rattling or a grunt call? Same as a decoy. You might be pushing it a little.
If you were fishing in a no-bait tournament, would they DQ your lures because you are altering what the fish would naturally do?