Gemini the Twins vs Twins

Gemini the Twins and Twins both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gemini the Twins	Yes	No	No	No
Twins	Yes	No	No	No

As nouns, Gemini the Twins and Twins are synonyms defined as:

Gemini the Twins and Twins: the third sign of the zodiac; the sun is in this sign from about May 21 to June 20

Other synonyms of Gemini the Twins include Gemini.

Gemini the Twins (noun)	Twins (noun)
the third sign of the zodiac; the sun is in this sign from about May 21 to June 20	the third sign of the zodiac; the sun is in this sign from about May 21 to June 20