chanoyu vs tea ceremony

chanoyu and tea ceremony both are nouns.

Word	Noun	Adjective	Verb	Adverb
chanoyu	Yes	No	No	No
tea ceremony	Yes	No	No	No

As nouns, chanoyu and tea ceremony are synonyms defined as:

chanoyu and tea ceremony: an ancient ritual for preparing and serving and drinking tea

chanoyu (noun)	tea ceremony (noun)
an ancient ritual for preparing and serving and drinking tea	an ancient ritual for preparing and serving and drinking tea