diamagnetism vs diamagnetic

diamagnetism is a noun but diamagnetic is not a noun.

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

diamagnetism (noun)	diamagnetic (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

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