Sri Lanka vs Ceylon

Sri Lanka and Ceylon both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sri Lanka	Yes	No	No	No
Ceylon	Yes	No	No	No

As nouns, Sri Lanka and Ceylon are synonyms defined as:

Sri Lanka and Ceylon: a republic on the island of Ceylon; became independent of the United Kingdom in 1948

Other synonyms of Sri Lanka include Democratic Socialist Republic of Sri Lanka.

As nouns, Sri Lanka and Ceylon are synonyms defined as:

Sri Lanka and Ceylon: an island in the Indian Ocean off the southeastern coast of India

Sri Lanka (noun)	Ceylon (noun)
a republic on the island of Ceylon; became independent of the United Kingdom in 1948	an island in the Indian Ocean off the southeastern coast of India
an island in the Indian Ocean off the southeastern coast of India	a republic on the island of Ceylon; became independent of the United Kingdom in 1948