saint vs St. Louis

saint and St. Louis both are nouns.

Word	Noun	Adjective	Verb	Adverb
saint	Yes	No	Yes	No
St. Louis	Yes	No	No	No

saint (noun)	St. Louis (noun)
person of exceptional holiness	the largest city in Missouri; a busy river port on the Mississippi River near its confluence with the Missouri River; was an important staging area for wagon trains westward in the 19th century
model of excellence or perfection of a kind; one having no equal	king of France and son of Louis VIII; he led two unsuccessful Crusades; considered an ideal medieval king (1214-1270)
a person who has died and has been declared a saint by canonization

saint (verb)	St. Louis (verb)
declare (a dead person) to be a saint
hold sacred