false morel vs helvella

false morel and helvella both are nouns.

Word	Noun	Adjective	Verb	Adverb
false morel	Yes	No	No	No
helvella	Yes	No	No	No

As nouns, helvella is a hyponym of false morel; that is, helvella is a word with a more specific, narrower meaning than false morel:

false morel: a fungus of the family Helvellaceae
helvella: any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds

Other hyponyms of false morel include discina.

false morel (noun)	helvella (noun)
a fungus of the family Helvellaceae	any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds