jock itch vs eczema marginatum

jock itch and eczema marginatum both are nouns.

Word	Noun	Adjective	Verb	Adverb
jock itch	Yes	No	No	No
eczema marginatum	Yes	No	No	No

As nouns, jock itch and eczema marginatum are synonyms defined as:

jock itch and eczema marginatum: fungal infection of the groin (most common in men)

Other synonyms of jock itch include tinea cruris.

jock itch (noun)	eczema marginatum (noun)
fungal infection of the groin (most common in men)	fungal infection of the groin (most common in men)