jack-o-lantern fungus vs jack-o-lantern

jack-o-lantern fungus and jack-o-lantern both are nouns.

Word	Noun	Adjective	Verb	Adverb
jack-o-lantern fungus	Yes	No	No	No
jack-o-lantern	Yes	No	No	No

As nouns, jack-o-lantern fungus and jack-o-lantern are synonyms defined as:

jack-o-lantern fungus and jack-o-lantern: a large poisonous agaric with orange caps and narrow clustered stalks; the gills are luminescent

Other synonyms of jack-o-lantern fungus include jack-a-lantern, Omphalotus illudens.

jack-o-lantern fungus (noun)	jack-o-lantern (noun)
a large poisonous agaric with orange caps and narrow clustered stalks; the gills are luminescent	a large poisonous agaric with orange caps and narrow clustered stalks; the gills are luminescent