towel rack vs towel horse

towel rack and towel horse both are nouns.

Word	Noun	Adjective	Verb	Adverb
towel rack	Yes	No	No	No
towel horse	Yes	No	No	No

As nouns, towel rack and towel horse are synonyms defined as:

towel rack and towel horse: a rack consisting of one or more bars on which towels can be hung

towel rack (noun)	towel horse (noun)
a rack consisting of one or more bars on which towels can be hung	a rack consisting of one or more bars on which towels can be hung