chief justice vs justice

chief justice and justice both are nouns.

Word	Noun	Adjective	Verb	Adverb
chief justice	Yes	No	No	No
justice	Yes	No	No	No

As nouns, justice is a hypernym of chief justice; that is, justice is a word with a broader meaning than chief justice:

chief justice: the judge who presides over a supreme court
justice: a public official authorized to decide questions brought before a court of justice

Other hypernyms of chief justice include judge, jurist.

chief justice (noun)	justice (noun)
the judge who presides over a supreme court	judgment involved in the determination of rights and the assignment of rewards and punishments
	the quality of being just or fair
	a public official authorized to decide questions brought before a court of justice