rhabdomancy vs foretelling

rhabdomancy and foretelling both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhabdomancy	Yes	No	No	No
foretelling	Yes	No	No	No

As nouns, foretelling is a hypernym of rhabdomancy; that is, foretelling is a word with a broader meaning than rhabdomancy:

rhabdomancy: searching for underground water or minerals by using a dowsing rod
foretelling: the art or gift of prophecy (or the pretense of prophecy) by supernatural means

Other hypernyms of rhabdomancy include divination, fortune telling, soothsaying.

rhabdomancy (noun)	foretelling (noun)
searching for underground water or minerals by using a dowsing rod	the art or gift of prophecy (or the pretense of prophecy) by supernatural means
	a statement made about the future