Saint Kitts vs Saint Christopher

Saint Kitts and Saint Christopher both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saint Kitts	Yes	No	No	No
Saint Christopher	Yes	No	No	No

As nouns, Saint Kitts and Saint Christopher are synonyms defined as:

Saint Kitts and Saint Christopher: the largest of the islands comprising Saint Christopher-Nevis

Other synonyms of Saint Kitts include St. Christopher, St. Kitts.

Saint Kitts (noun)	Saint Christopher (noun)
the largest of the islands comprising Saint Christopher-Nevis	the largest of the islands comprising Saint Christopher-Nevis
	Christian martyr and patron saint of travellers (3rd century)