tinea vs ringworm

tinea and ringworm both are nouns.

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

As nouns, tinea and ringworm are synonyms defined as:

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

Other synonyms of tinea include roundworm.

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