Scorpius vs Scorpio

Scorpius and Scorpio both are nouns.

Word	Noun	Adjective	Verb	Adverb
Scorpius	Yes	No	No	No
Scorpio	Yes	No	No	No

As nouns, Scorpius and Scorpio are synonyms defined as:

Scorpius and Scorpio: a large zodiacal constellation between Libra and Sagittarius

Scorpius (noun)	Scorpio (noun)
a large zodiacal constellation between Libra and Sagittarius	the eighth sign of the zodiac; the sun is in this sign from about October 23 to November 21
	a large zodiacal constellation between Libra and Sagittarius
	(astrology) a person who is born while the sun is in Scorpio