What's the difference between necromancy and psychomancy?

Necromancy

Definition:

• (n.) The art of revealing future events by means of a pretended communication with the dead; the black art; hence, magic in general; conjuration; enchantment. See Black art.

Example Sentences:

• (1) They also set out a clear thrash blueprint: grow your hair, call your fan club something provocative like Slatanic Wermacht, wear denim and write songs about Nazis, necromancy and general evil stuff.
• (2) Oh, you expect the usual stampede of misbehaviour; the filth and necromancy, the lying and preening.

Psychomancy

Definition:

• (n.) Necromancy.

Example Sentences:

• (1) Against a sociocultural background in which the collective wisdom of the past is retained and transmitted orally to contemporary healers, especially to the bajalica, or conjurer who heals with words, it is shown how shared communicative modes of trust, talk and touch are essential to the ritual psychomancy by which the treatment 'works'.