towel horse vs towel rack

towel horse and towel rack both are nouns.

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

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

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

towel horse (noun)	towel rack (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