bottlebrush buckeye vs dwarf buckeye

bottlebrush buckeye and dwarf buckeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottlebrush buckeye	Yes	No	No	No
dwarf buckeye	Yes	No	No	No

As nouns, bottlebrush buckeye and dwarf buckeye are synonyms defined as:

bottlebrush buckeye and dwarf buckeye: a spreading shrub with pink flowers; found in southeastern United States

bottlebrush buckeye (noun)	dwarf buckeye (noun)
a spreading shrub with pink flowers; found in southeastern United States	a spreading shrub with pink flowers; found in southeastern United States