Gambia vs The Gambia

Gambia and The Gambia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gambia	Yes	No	No	No
The Gambia	Yes	No	No	No

As nouns, Gambia and The Gambia are synonyms defined as:

Gambia and The Gambia: a narrow republic surrounded by Senegal in West Africa

Other synonyms of Gambia include Republic of The Gambia.

Gambia (noun)	The Gambia (noun)
a narrow republic surrounded by Senegal in West Africa	a narrow republic surrounded by Senegal in West Africa