Eysenck vs H. J. Eysenck

Eysenck and H. J. Eysenck both are nouns.

Word	Noun	Adjective	Verb	Adverb
Eysenck	Yes	No	No	No
H. J. Eysenck	Yes	No	No	No

As nouns, Eysenck and H. J. Eysenck are synonyms defined as:

Eysenck and H. J. Eysenck: a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis

Other synonyms of Eysenck include Hans Eysenck, Hans Jurgen Eysenck.

Eysenck (noun)	H. J. Eysenck (noun)
a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis	a British psychologist (born in Germany) noted for his theories of intelligence and personality and for his strong criticism of Freudian psychoanalysis