weightlifter vs jock

weightlifter and jock both are nouns.

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

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

Other hypernyms of weightlifter include athlete.

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