mansion vs sign of the zodiac

mansion and sign of the zodiac both are nouns.

Word	Noun	Adjective	Verb	Adverb
mansion	Yes	No	No	No
sign of the zodiac	Yes	No	No	No

As nouns, mansion and sign of the zodiac are synonyms defined as:

mansion and sign of the zodiac: (astrology) one of 12 equal areas into which the zodiac is divided

Other synonyms of mansion include house, planetary house, sign, star sign.

mansion (noun)	sign of the zodiac (noun)
a large and imposing house	(astrology) one of 12 equal areas into which the zodiac is divided
(astrology) one of 12 equal areas into which the zodiac is divided