court tennis vs real tennis

court tennis and real tennis both are nouns.

Word	Noun	Adjective	Verb	Adverb
court tennis	Yes	No	No	No
real tennis	Yes	No	No	No

As nouns, court tennis and real tennis are synonyms defined as:

court tennis and real tennis: an ancient form of tennis played in a four-walled court

Other synonyms of court tennis include royal tennis.

court tennis (noun)	real tennis (noun)
an ancient form of tennis played in a four-walled court	an ancient form of tennis played in a four-walled court