diamagnetic vs diamagnetism

diamagnetic is not a noun while diamagnetism is a noun.

Word	Noun	Adjective	Verb	Adverb
diamagnetic	No	Yes	No	No
diamagnetism	Yes	No	No	No

diamagnetic (noun)	diamagnetism (noun)
	phenomenon exhibited by materials like copper or bismuth that become magnetized in a magnetic field with a polarity opposite to the magnetic force; unlike iron they are slightly repelled by a magnet

diamagnetic (adjective)	diamagnetism (adjective)
relating to or exhibiting diamagnetism; slightly repelled by a magnet