telepathist vs mental telepathist

telepathist and mental telepathist both are nouns.

Word	Noun	Adjective	Verb	Adverb
telepathist	Yes	No	No	No
mental telepathist	Yes	No	No	No

As nouns, telepathist and mental telepathist are synonyms defined as:

telepathist and mental telepathist: someone with the power of communicating thoughts directly

Other synonyms of telepathist include mind reader, thought-reader.

telepathist (noun)	mental telepathist (noun)
someone with the power of communicating thoughts directly	someone with the power of communicating thoughts directly
a magician who seems to discern the thoughts of another person (usually by clever signals from an accomplice)