sign of the zodiac vs planetary house

sign of the zodiac and planetary house both are nouns.

Word	Noun	Adjective	Verb	Adverb
sign of the zodiac	Yes	No	No	No
planetary house	Yes	No	No	No

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

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

Other synonyms of sign of the zodiac include house, mansion, sign, star sign.

sign of the zodiac (noun)	planetary house (noun)
(astrology) one of 12 equal areas into which the zodiac is divided	(astrology) one of 12 equal areas into which the zodiac is divided