Spanish Guinea vs Republic of Equatorial Guinea

Spanish Guinea and Republic of Equatorial Guinea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish Guinea	Yes	No	No	No
Republic of Equatorial Guinea	Yes	No	No	No

As nouns, Spanish Guinea and Republic of Equatorial Guinea are synonyms defined as:

Spanish Guinea and Republic of Equatorial Guinea: a country of west central Africa (including islands in the Gulf of Guinea); became independent from Spain in 1968

Other synonyms of Spanish Guinea include Equatorial Guinea.

Spanish Guinea (noun)	Republic of Equatorial Guinea (noun)
a country of west central Africa (including islands in the Gulf of Guinea); became independent from Spain in 1968	a country of west central Africa (including islands in the Gulf of Guinea); became independent from Spain in 1968