possum haw vs holly

possum haw and holly both are nouns.

Word	Noun	Adjective	Verb	Adverb
possum haw	Yes	No	No	No
holly	Yes	No	No	No

As nouns, holly is a hypernym of possum haw; that is, holly is a word with a broader meaning than possum haw:

possum haw: deciduous shrub of southeastern and central United States
holly: any tree or shrub of the genus Ilex having red berries and shiny evergreen leaves with prickly edges

possum haw (noun)	holly (noun)
deciduous shrub of southeastern and central United States	any tree or shrub of the genus Ilex having red berries and shiny evergreen leaves with prickly edges