Mandelstam vs Osip Emilevich Mandelstam

Mandelstam and Osip Emilevich Mandelstam both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mandelstam	Yes	No	No	No
Osip Emilevich Mandelstam	Yes	No	No	No

As nouns, Mandelstam and Osip Emilevich Mandelstam are synonyms defined as:

Mandelstam and Osip Emilevich Mandelstam: Russian poet who died in a prison camp (1891-1938)

Other synonyms of Mandelstam include Mandelshtam, Osip Mandelstam.

Mandelstam (noun)	Osip Emilevich Mandelstam (noun)
Russian poet who died in a prison camp (1891-1938)	Russian poet who died in a prison camp (1891-1938)