roundworm vs fungal infection

roundworm and fungal infection both are nouns.

Word	Noun	Adjective	Verb	Adverb
roundworm	Yes	No	No	No
fungal infection	Yes	No	No	No

As nouns, fungal infection is a hypernym of roundworm; that is, fungal infection is a word with a broader meaning than roundworm:

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

Other hypernyms of roundworm include mycosis.

roundworm (noun)	fungal infection (noun)
unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic	an inflammatory condition caused by a fungus
infections of the skin or nails caused by fungi and appearing as itching circular patches