rounders vs baseball

rounders and baseball both are nouns.

Word	Noun	Adjective	Verb	Adverb
rounders	Yes	No	No	No
baseball	Yes	No	No	No

As nouns, baseball is a hypernym of rounders; that is, baseball is a word with a broader meaning than rounders:

rounders: an English ball game similar to baseball
baseball: a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs

Other hypernyms of rounders include ball, baseball game.

rounders (noun)	baseball (noun)
an English ball game similar to baseball	a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs
	a ball used in playing baseball