bowling vs bosie ball

bowling and bosie ball both are nouns.

Word	Noun	Adjective	Verb	Adverb
bowling	Yes	No	No	No
bosie ball	Yes	No	No	No

As nouns, bosie ball is a hyponym of bowling; that is, bosie ball is a word with a more specific, narrower meaning than bowling:

bowling: (cricket) the act of delivering a cricket ball to the batsman
bosie ball: a cricket ball bowled as if to break one way that actually breaks in the opposite way

Other hyponyms of bowling include Chinaman, bosie, googly, wrong 'un, no ball.

bowling (noun)	bosie ball (noun)
a game in which balls are rolled at an object or group of objects with the aim of knocking them over or moving them	a cricket ball bowled as if to break one way that actually breaks in the opposite way
the playing of a game of tenpins or duckpins etc
(cricket) the act of delivering a cricket ball to the batsman