Raphael vs Raffaello Santi

Raphael and Raffaello Santi both are nouns.

Word	Noun	Adjective	Verb	Adverb
Raphael	Yes	No	No	No
Raffaello Santi	Yes	No	No	No

As nouns, Raphael and Raffaello Santi are synonyms defined as:

Raphael and Raffaello Santi: Italian painter whose many paintings exemplify the ideals of the High Renaissance (1483-1520)

Other synonyms of Raphael include Raffaello Sanzio.

Raphael (noun)	Raffaello Santi (noun)
Italian painter whose many paintings exemplify the ideals of the High Renaissance (1483-1520)	Italian painter whose many paintings exemplify the ideals of the High Renaissance (1483-1520)
an archangel of the Hebrew tradition