A History of Short Words

From the New York Times Crossword Puzzle

CORE

Tue, 20 Jan '26
McIntosh (or Macintosh) component
Mon, 24 Nov '25
Planks strengthen it
Sun, 31 Aug '25
Heart
Wed, 5 Mar '25
Center
Thu, 21 Nov '24
Gala throwaway
Sat, 5 Oct '24
Key
Tue, 1 Oct '24
Spot for abs or apple seeds
Mon, 13 Nov '23
Pilates target
Thu, 27 Jul '23
17-Across + 18-Across = 19-Across
Fri, 16 Sep '22
Heart
Sat, 11 Jun '22
Planks can strengthen it
Wed, 3 Nov '21
Fitness center?
Mon, 11 Jan '21
Part of a reactor