tinea vs mycosis

tinea and mycosis both are nouns.

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

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

tinea: infections of the skin or nails caused by fungi and appearing as itching circular patches
mycosis: an inflammatory condition caused by a fungus

Other hypernyms of tinea include fungal infection.

tinea (noun)	mycosis (noun)
infections of the skin or nails caused by fungi and appearing as itching circular patches	an inflammatory condition caused by a fungus