Hyderabad vs Republic of India

Hyderabad and Republic of India both are nouns.

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

Hyderabad (noun)	Republic of India (noun)
a city in south central India in Andhra Pradesh	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 city in southern Pakistan on the Indus River