chiromancy vs fortune telling

chiromancy and fortune telling both are nouns.

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

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

chiromancy: telling fortunes by lines on the palm of the hand
fortune telling: the art or gift of prophecy (or the pretense of prophecy) by supernatural means

Other hypernyms of chiromancy include divination, foretelling, soothsaying.

chiromancy (noun)	fortune telling (noun)
telling fortunes by lines on the palm of the hand	the art or gift of prophecy (or the pretense of prophecy) by supernatural means