cricketer vs jock

cricketer and jock both are nouns.

Word	Noun	Adjective	Verb	Adverb
cricketer	Yes	No	No	No
jock	Yes	No	No	No

As nouns, jock is a hypernym of cricketer; that is, jock is a word with a broader meaning than cricketer:

Other hypernyms of cricketer include athlete.

cricketer (noun)	jock (noun)
an athlete who plays cricket	a support for the genitals worn by men engaging in strenuous exercise
	a person trained to compete in sports