Republic of India vs India

Republic of India and India both are nouns.

Word	Noun	Adjective	Verb	Adverb
Republic of India	Yes	No	No	No
India	Yes	No	No	No

As nouns, Republic of India and India are synonyms defined as:

Republic of India and India: a republic in the Asian subcontinent in southern Asia; second most populous country in the world; achieved independence from the United Kingdom in 1947

Other synonyms of Republic of India include Bharat.

Republic of India (noun)	India (noun)
a republic in the Asian subcontinent in southern Asia; second most populous country in the world; achieved independence from the United Kingdom in 1947	a republic in the Asian subcontinent in southern Asia; second most populous country in the world; achieved independence from the United Kingdom in 1947