magnetics vs magnetism

magnetics and magnetism both are nouns.

Word	Noun	Adjective	Verb	Adverb
magnetics	Yes	No	No	No
magnetism	Yes	No	No	No

As nouns, magnetics and magnetism are synonyms defined as:

magnetics (noun)	magnetism (noun)
the branch of science that studies magnetism	the branch of science that studies magnetism
	attraction for iron; associated with electric currents as well as magnets; characterized by fields of force