tinea vs roundworm

tinea and roundworm both are nouns.

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

As nouns, tinea and roundworm are synonyms defined as:

tinea and roundworm: infections of the skin or nails caused by fungi and appearing as itching circular patches

Other synonyms of tinea include ringworm.

tinea (noun)	roundworm (noun)
infections of the skin or nails caused by fungi and appearing as itching circular patches	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