phantasm vs fantasm

phantasm and fantasm both are nouns.

Word	Noun	Adjective	Verb	Adverb
phantasm	Yes	No	No	No
fantasm	Yes	No	No	No

As nouns, phantasm and fantasm are synonyms defined as:

Other synonyms of phantasm include apparition, phantasma, phantom, shadow.

As nouns, phantasm and fantasm are synonyms defined as:

Other synonyms of phantasm include apparition, phantasma, phantom, specter, spectre.

phantasm (noun)	fantasm (noun)
something existing in perception only	something existing in perception only
a ghostly appearing figure	a ghostly appearing figure