horse chestnut vs buckeye

horse chestnut and buckeye both are nouns.

Word	Noun	Adjective	Verb	Adverb
horse chestnut	Yes	No	No	No
buckeye	Yes	No	No	No

As nouns, horse chestnut and buckeye are synonyms defined as:

horse chestnut and buckeye: tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds

Other synonyms of horse chestnut include Aesculus hippocastanum.

As nouns, horse chestnut and buckeye are synonyms defined as:

horse chestnut and buckeye: the inedible nutlike seed of the horse chestnut

Other synonyms of horse chestnut include conker.

horse chestnut (noun)	buckeye (noun)
tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds	tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds
the inedible nutlike seed of the horse chestnut	the inedible nutlike seed of the horse chestnut