St. Christopher vs Saint Christopher

St. Christopher and Saint Christopher both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Christopher	Yes	No	No	No
Saint Christopher	Yes	No	No	No

As nouns, St. Christopher and Saint Christopher are synonyms defined as:

St. Christopher and Saint Christopher: the largest of the islands comprising Saint Christopher-Nevis

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

As nouns, St. Christopher and Saint Christopher are synonyms defined as:

St. Christopher and Saint Christopher: Christian martyr and patron saint of travellers (3rd century)

Other synonyms of St. Christopher include Christopher.

St. Christopher (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)	Christian martyr and patron saint of travellers (3rd century)