A History of Short Words

From the New York Times Crossword Puzzle

NOD

Wed, 6 Oct '21
Drop (off)
Mon, 12 Jul '21
Give silent approval
Sun, 11 Apr '21
Drift off to sleep
Sun, 7 Mar '21
Drop off
Fri, 5 Mar '21
"Hey there" equivalent
Sun, 7 Feb '21
Signal approval