IPA: /ˈspeɪspɔːrt/
KK: /ˈspeɪspɔrt/
A place where spacecraft are launched and maintained, often equipped with facilities for testing and supporting space missions.
The new spaceport will allow for more frequent launches into orbit.
Spaceport → It is formed from "space" (from Latin *spatium*, meaning room or extent) and "port" (from Latin *portus*, meaning harbor or gateway). A spaceport is a facility designed for the launching and receiving of spacecraft, essentially a harbor for space travel.
Think of a 'harbor' ('port') for 'room' or 'extent' ('space') where spacecraft can launch and land.
No commonly confused words.