Sir Arthur Stanley Eddington vs Eddington

Sir Arthur Stanley Eddington and Eddington both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Arthur Stanley Eddington	Yes	No	No	No
Eddington	Yes	No	No	No

As nouns, Sir Arthur Stanley Eddington and Eddington are synonyms defined as:

Sir Arthur Stanley Eddington and Eddington: English astronomer remembered for his popular elucidation of relativity theory (1882-1944)

Other synonyms of Sir Arthur Stanley Eddington include Arthur Eddington.

Sir Arthur Stanley Eddington (noun)	Eddington (noun)
English astronomer remembered for his popular elucidation of relativity theory (1882-1944)	English astronomer remembered for his popular elucidation of relativity theory (1882-1944)