Bull vs Taurus the Bull

Bull and Taurus the Bull both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bull	Yes	No	No	No
Taurus the Bull	Yes	No	No	No

As nouns, Bull and Taurus the Bull are synonyms defined as:

Bull and Taurus the Bull: the second sign of the zodiac; the sun is in this sign from about April 20 to May 20

Other synonyms of Bull include Taurus.

Bull (noun)	Taurus the Bull (noun)
the second sign of the zodiac; the sun is in this sign from about April 20 to May 20	the second sign of the zodiac; the sun is in this sign from about April 20 to May 20
(astrology) a person who is born while the sun is in Taurus