groundsel tree vs cotton-seed tree

groundsel tree and cotton-seed tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
groundsel tree	Yes	No	No	No
cotton-seed tree	Yes	No	No	No

As nouns, groundsel tree and cotton-seed tree are synonyms defined as:

groundsel tree and cotton-seed tree: 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, groundsel bush.

groundsel tree (noun)	cotton-seed tree (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