netminder vs jock

netminder and jock both are nouns.

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

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

Other hypernyms of netminder include athlete, participant, player.

netminder (noun)	jock (noun)
the soccer or hockey player assigned to protect the goal	a support for the genitals worn by men engaging in strenuous exercise
	a person trained to compete in sports