Ivan Turgenev vs Turgenev

Ivan Turgenev and Turgenev both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ivan Turgenev	Yes	No	No	No
Turgenev	Yes	No	No	No

As nouns, Ivan Turgenev and Turgenev are synonyms defined as:

Ivan Turgenev and Turgenev: Russian writer of stories and novels and plays (1818-1883)

Other synonyms of Ivan Turgenev include Ivan Sergeevich Turgenev.

Ivan Turgenev (noun)	Turgenev (noun)
Russian writer of stories and novels and plays (1818-1883)	Russian writer of stories and novels and plays (1818-1883)