daystar vs Phosphorus

daystar and Phosphorus both are nouns.

Word	Noun	Adjective	Verb	Adverb
daystar	Yes	No	No	No
Phosphorus	Yes	No	No	No

As nouns, daystar and Phosphorus are synonyms defined as:

daystar and Phosphorus: a planet (usually Venus) seen just before sunrise in the eastern sky

Other synonyms of daystar include Lucifer, morning star.

daystar (noun)	Phosphorus (noun)
a planet (usually Venus) seen just before sunrise in the eastern sky	a planet (usually Venus) seen just before sunrise in the eastern sky