fortuneteller vs fortune teller

fortuneteller and fortune teller both are nouns.

Word	Noun	Adjective	Verb	Adverb
fortuneteller	Yes	No	No	No
fortune teller	Yes	No	No	No

As nouns, fortuneteller and fortune teller are synonyms defined as:

fortuneteller and fortune teller: a person who foretells your personal future

fortuneteller (noun)	fortune teller (noun)
a person who foretells your personal future	a person who foretells your personal future