A History of Short Words

From the New York Times Crossword Puzzle

COG

Mon, 21 Nov '22
Small but important machine part
Sun, 19 Jun '22
Lowly worker, so to speak
Sun, 8 Aug '21
Menial laborer, metaphorically
Thu, 6 May '21
Gear tooth
Sat, 27 Mar '21
It may be in the works