A History of Short Words

From the New York Times Crossword Puzzle

ROOT

Fri, 20 May '22
Source
Wed, 15 Dec '21
Edible part of a taro plant
Sun, 7 Nov '21
The C of C major, e.g.
Tue, 6 Jul '21
Plant part that most herbicides attack
Fri, 23 Apr '21
Original cause
Sun, 7 Mar '21
Two, for four