Sir Rabindranath Tagore vs Rabindranath Tagore

Sir Rabindranath Tagore and Rabindranath Tagore both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sir Rabindranath Tagore	Yes	No	No	No
Rabindranath Tagore	Yes	No	No	No

As nouns, Sir Rabindranath Tagore and Rabindranath Tagore are synonyms defined as:

Sir Rabindranath Tagore and Rabindranath Tagore: Indian writer and philosopher whose poetry (based on traditional Hindu themes) pioneered the use of colloquial Bengali (1861-1941)

Other synonyms of Sir Rabindranath Tagore include Tagore.

Sir Rabindranath Tagore (noun)	Rabindranath Tagore (noun)
Indian writer and philosopher whose poetry (based on traditional Hindu themes) pioneered the use of colloquial Bengali (1861-1941)	Indian writer and philosopher whose poetry (based on traditional Hindu themes) pioneered the use of colloquial Bengali (1861-1941)