A History of Short Words

From the New York Times Crossword Puzzle

ALLY

Tue, 3 May '22
Partner
Sat, 25 Dec '21
Side (with)
Thu, 14 Oct '21
One who's got your back
Mon, 27 Sep '21
Any member of NATO to any other
Tue, 7 Sep '21
Partner in battle
Sun, 30 May '21
Partner
Mon, 17 May '21
Friend in a conflict