tinea corporis vs roundworm

tinea corporis and roundworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
tinea corporis	Yes	No	No	No
roundworm	Yes	No	No	No

As nouns, roundworm is a hypernym of tinea corporis; that is, roundworm is a word with a broader meaning than tinea corporis:

tinea corporis: fungal infection of nonhairy parts of the skin
roundworm: infections of the skin or nails caused by fungi and appearing as itching circular patches

Other hypernyms of tinea corporis include ringworm, tinea.

tinea corporis (noun)	roundworm (noun)
fungal infection of nonhairy parts of the skin	unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic
	infections of the skin or nails caused by fungi and appearing as itching circular patches