certiorari vs writ of certiorari

certiorari and writ of certiorari both are nouns.

Word	Noun	Adjective	Verb	Adverb
certiorari	Yes	No	No	No
writ of certiorari	Yes	No	No	No

As nouns, certiorari and writ of certiorari are synonyms defined as:

certiorari and writ of certiorari: a common law writ issued by a superior court to one of inferior jurisdiction demanding the record of a particular case

certiorari (noun)	writ of certiorari (noun)
a common law writ issued by a superior court to one of inferior jurisdiction demanding the record of a particular case	a common law writ issued by a superior court to one of inferior jurisdiction demanding the record of a particular case