Alexander II of Russia vs Alexander the Liberator

Alexander II of Russia and Alexander the Liberator both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alexander II of Russia	Yes	No	No	No
Alexander the Liberator	Yes	No	No	No

As nouns, Alexander II of Russia and Alexander the Liberator are synonyms defined as:

Alexander II of Russia and Alexander the Liberator: the son of Nicholas I who, as czar of Russia, introduced reforms that included limited emancipation of the serfs (1818-1881)

Other synonyms of Alexander II of Russia include Alexander II, Czar Alexander II.

Alexander II of Russia (noun)	Alexander the Liberator (noun)
the son of Nicholas I who, as czar of Russia, introduced reforms that included limited emancipation of the serfs (1818-1881)	the son of Nicholas I who, as czar of Russia, introduced reforms that included limited emancipation of the serfs (1818-1881)