extraordinariness the quality of being extraordinary and not commonly encountered
ordinary not exceptional in any way especially in quality or ability or size or degree; "ordinary everyday objects"; "ordinary decency"; "an ordinary day"; "an ordinary wine"
extraordinary (of an official) serving an unusual or special function in addition to those of the regular officials; "an ambassador extraordinary"
quality an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare