Gospel According to Mark vs Mark

Gospel According to Mark and Mark both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gospel According to Mark	Yes	No	No	No
Mark	Yes	No	No	No

As nouns, Gospel According to Mark and Mark are synonyms defined as:

Gospel According to Mark and Mark: the shortest of the four Gospels in the New Testament

Other synonyms of Gospel According to Mark include Gospel of Mark.

Gospel According to Mark (noun)	Mark (noun)
the shortest of the four Gospels in the New Testament	the shortest of the four Gospels in the New Testament
	Apostle and companion of Saint Peter; assumed to be the author of the second Gospel