horse balsam vs horse chestnut balm

horse balsam and horse chestnut balm both are nouns.

Word	Noun	Adjective	Verb	Adverb
horse balsam	Yes	No	No	No
horse chestnut balm	Yes	No	No	No

As nouns, horse balsam and horse chestnut balm are synonyms defined as:

horse balsam and horse chestnut balm: an ointment containing horse chestnut extract, used to relieve muscle pain and joint pain.

Other synonyms of horse balsam include horse chestnut cream.

horse balsam (noun)	horse chestnut balm (noun)
an ointment containing horse chestnut extract, used to relieve muscle pain and joint pain.	an ointment containing horse chestnut extract, used to relieve muscle pain and joint pain.