dhobi itch vs tinea

dhobi itch and tinea both are nouns.

Word	Noun	Adjective	Verb	Adverb
dhobi itch	Yes	No	No	No
tinea	Yes	No	No	No

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

dhobi itch: fungal infection attacking moist parts of the body
tinea: infections of the skin or nails caused by fungi and appearing as itching circular patches

Other hypernyms of dhobi itch include ringworm, roundworm.

dhobi itch (noun)	tinea (noun)
fungal infection attacking moist parts of the body	infections of the skin or nails caused by fungi and appearing as itching circular patches