island vs Saint Christopher

island and Saint Christopher both are nouns.

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

island (noun)	Saint Christopher (noun)
a zone or area resembling an island	the largest of the islands comprising Saint Christopher-Nevis
a land mass (smaller than a continent) that is surrounded by water	Christian martyr and patron saint of travellers (3rd century)