A History of Short Words

From the New York Times Crossword Puzzle

DELTA

Fri, 29 Jul '22
Area around the mouth
Mon, 18 Apr '22
Airline with its main hub in Atlanta
Wed, 6 Apr '22
Difference symbol, in math
Tue, 15 Jun '21
Airline whose name is a Greek letter
Tue, 19 Jan '21
Buildup at the mouth of a river