unjust vs unfair

unjust and unfair both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unjust	No	Yes	No	No
unfair	No	Yes	No	No

As adjectives, unjust and unfair are synonyms defined as:

unjust and unfair: not fair; marked by injustice or partiality or deception

unjust (adjective)	unfair (adjective)
violating principles of justice	not fair; marked by injustice or partiality or deception
not equitable or fair
not fair; marked by injustice or partiality or deception