groundsel tree vs groundsel bush

groundsel tree and groundsel bush both are nouns.

Word	Noun	Adjective	Verb	Adverb
groundsel tree	Yes	No	No	No
groundsel bush	Yes	No	No	No

As nouns, groundsel tree and groundsel bush are synonyms defined as:

groundsel tree and groundsel bush: a shrub of salt marshes of eastern and south central North America and West Indies; fruit is surrounded with white plumelike hairy tufts

Other synonyms of groundsel tree include Baccharis halimifolia, consumption weed, cotton-seed tree.

groundsel tree (noun)	groundsel bush (noun)
a shrub of salt marshes of eastern and south central North America and West Indies; fruit is surrounded with white plumelike hairy tufts	a shrub of salt marshes of eastern and south central North America and West Indies; fruit is surrounded with white plumelike hairy tufts