You're right, when you have a two word keyword is it easier to differentiate the two.
Outdoor is an adjective that usually precedes a noun, for example OutdoorGear, OutdoorGames etc
Outdoors on the other hand is a noun that follows an adjective or a verb, ex, WildOutdoors, GoOutdoors etc
But as single keywords, I wanted to know which one has more versatility for development.
Would for example Outdoors.com be better suited than Outdoor.com say for a product website (outdoor clothing etc) or a travel marketplace?