The word hub is a noun. Hub means (1) the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes, (2) a center of activity or interest or commerce or transportation; a focal point around which events revolve.
The following articles and web pages elaborate on the word hub.
The streaming service said it would bid for a nearly 300-acre chunk of Fort Monmouth and it has the support of Gov. Phil Murphy.
Brooks Barnes and John Koblin. New York Times. Tuesday, 26 Oct 2021 21:07:08 +0000.