Olaf II vs St. Olaf

Olaf II and St. Olaf both are nouns.

Word	Noun	Adjective	Verb	Adverb
Olaf II	Yes	No	No	No
St. Olaf	Yes	No	No	No

As nouns, Olaf II and St. Olaf are synonyms defined as:

Other synonyms of Olaf II include Olaf II of Norway, Olav II, Saint Olaf, Saint Olav, St. Olav.

Olaf II (noun)	St. Olaf (noun)
King and patron saint of Norway (995-1030)	King and patron saint of Norway (995-1030)