sport vs weight class

sport and weight class both are nouns.

Word	Noun	Adjective	Verb	Adverb
sport	Yes	No	Yes	No
weight class	Yes	No	No	No

sport (noun)	weight class (noun)
an active diversion requiring physical exertion and competition	(combat sports) a division of competition used to match competitors against others of their own size.
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)	weight class (verb)
play boisterously
wear or display in an ostentatious or proud manner