sport vs sit out

sport is a noun but sit out is not a noun.

Word	Noun	Adjective	Verb	Adverb
sport	Yes	No	Yes	No
sit out	No	No	Yes	No

sport (noun)	sit out (noun)
an active diversion requiring physical exertion and competition
the occupation of athletes who compete for pay
verbal wit or mockery (often at another's expense but not to be taken seriously)
someone who engages in sports
(biology) an organism that has characteristics resulting from chromosomal alteration
a person known for the way she (or he) behaves when teased or defeated or subjected to trying circumstances
(Maine colloquial) a temporary summer resident of Maine

sport (verb)	sit out (verb)
play boisterously	endure to the end
wear or display in an ostentatious or proud manner	not participate in (an activity, such as a dance or a sports event)