jockstrap vs man's clothing

jockstrap and man's clothing both are nouns.

Word	Noun	Adjective	Verb	Adverb
jockstrap	Yes	No	No	No
man's clothing	Yes	No	No	No

As nouns, man's clothing is a hypernym of jockstrap; that is, man's clothing is a word with a broader meaning than jockstrap:

jockstrap: a support for the genitals worn by men engaging in strenuous exercise
man's clothing: clothing that is designed for men to wear

Other hypernyms of jockstrap include protective garment.

jockstrap (noun)	man's clothing (noun)
a support for the genitals worn by men engaging in strenuous exercise	clothing that is designed for men to wear