A History of Short Words

From the New York Times Crossword Puzzle

COG

Sat, 6 Jan '24
Small part of a system
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