jockstrap vs athletic supporter

jockstrap and athletic supporter both are nouns.

Word	Noun	Adjective	Verb	Adverb
jockstrap	Yes	No	No	No
athletic supporter	Yes	No	No	No

As nouns, jockstrap and athletic supporter are synonyms defined as:

jockstrap and athletic supporter: a support for the genitals worn by men engaging in strenuous exercise

Other synonyms of jockstrap include jock, supporter, suspensor.

jockstrap (noun)	athletic supporter (noun)
a support for the genitals worn by men engaging in strenuous exercise	a support for the genitals worn by men engaging in strenuous exercise