A History of Short Words

From the New York Times Crossword Puzzle

CORE

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