jock vs protective garment

jock and protective garment both are nouns.

Word	Noun	Adjective	Verb	Adverb
jock	Yes	No	No	No
protective garment	Yes	No	No	No

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

jock: a support for the genitals worn by men engaging in strenuous exercise
protective garment: clothing that is intended to protect the wearer from injury

Other hypernyms of jock include man's clothing.

jock (noun)	protective garment (noun)
a support for the genitals worn by men engaging in strenuous exercise	clothing that is intended to protect the wearer from injury
a person trained to compete in sports