tinea unguium vs ringworm

tinea unguium and ringworm both are nouns.

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

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

tinea unguium: fungal infection of the nails (especially toenails)
ringworm: infections of the skin or nails caused by fungi and appearing as itching circular patches

Other hypernyms of tinea unguium include roundworm, tinea.

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