palmister vs fortuneteller

palmister and fortuneteller both are nouns.

Word	Noun	Adjective	Verb	Adverb
palmister	Yes	No	No	No
fortuneteller	Yes	No	No	No

As nouns, fortuneteller is a hypernym of palmister; that is, fortuneteller is a word with a broader meaning than palmister:

palmister: fortuneteller who predicts your future by the lines on your palms
fortuneteller: a person who foretells your personal future

Other hypernyms of palmister include fortune teller.

palmister (noun)	fortuneteller (noun)
fortuneteller who predicts your future by the lines on your palms	a person who foretells your personal future