oneiromancy vs fortune telling

oneiromancy and fortune telling both are nouns.

Word	Noun	Adjective	Verb	Adverb
oneiromancy	Yes	No	No	No
fortune telling	Yes	No	No	No

As nouns, fortune telling is a hypernym of oneiromancy; that is, fortune telling is a word with a broader meaning than oneiromancy:

oneiromancy: divination through the interpretation of dreams
fortune telling: the art or gift of prophecy (or the pretense of prophecy) by supernatural means

Other hypernyms of oneiromancy include divination, foretelling, soothsaying.

oneiromancy (noun)	fortune telling (noun)
divination through the interpretation of dreams	the art or gift of prophecy (or the pretense of prophecy) by supernatural means