tinea cruris vs eczema marginatum

tinea cruris and eczema marginatum both are nouns.

Word	Noun	Adjective	Verb	Adverb
tinea cruris	Yes	No	No	No
eczema marginatum	Yes	No	No	No

As nouns, tinea cruris and eczema marginatum are synonyms defined as:

tinea cruris and eczema marginatum: fungal infection of the groin (most common in men)

Other synonyms of tinea cruris include jock itch.

tinea cruris (noun)	eczema marginatum (noun)
fungal infection of the groin (most common in men)	fungal infection of the groin (most common in men)