Superb
Part of speech: adjective
Definition: first-rate; of the highest quality; exceptionally good
Example sentence: Etretat is becoming more and more amazing. Now is the real moment: the beach with all its fine boats; it is superb, and I am enraged not to be more skillful in rendering all this. I would need two hands and hundreds of canvases.
Superior
Part of speech: adjective
Definition: Higher in quality.Higher in rank.Located above.Being greater or better than average; extraordinary.
Part of speech: noun
Definition: A person of higher rank or quality.The senior person in a monastic community.
Example sentence: Once made equal to man, woman becomes his superior.