lodestone vs static magnet

lodestone and static magnet both are nouns.

Word	Noun	Adjective	Verb	Adverb
lodestone	Yes	No	No	No
static magnet	Yes	No	No	No

As nouns, static magnet is a hypernym of lodestone; that is, static magnet is a word with a broader meaning than lodestone:

lodestone: a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically
static magnet: a magnet that retains its magnetism after being removed from a magnetic field

Other hypernyms of lodestone include permanent magnet.

lodestone (noun)	static magnet (noun)
a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically	a magnet that retains its magnetism after being removed from a magnetic field