jock itch vs tinea cruris

jock itch and tinea cruris both are nouns.

Word	Noun	Adjective	Verb	Adverb
jock itch	Yes	No	No	No
tinea cruris	Yes	No	No	No

As nouns, jock itch and tinea cruris are synonyms defined as:

jock itch and tinea cruris: fungal infection of the groin (most common in men)

Other synonyms of jock itch include eczema marginatum.

jock itch (noun)	tinea cruris (noun)
fungal infection of the groin (most common in men)	fungal infection of the groin (most common in men)