shadow vs phantasm

shadow and phantasm both are nouns.

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

As nouns, shadow and phantasm are synonyms defined as:

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

shadow (noun)	phantasm (noun)
refuge from danger or observation	something existing in perception only
something existing in perception only	a ghostly appearing figure
an indication that something has been present
a premonition of something adverse
an unilluminated area
a spy employed to follow someone and report their movements
an inseparable companion
a dominating and pervasive presence
shade within clear boundaries

shadow (verb)	phantasm (verb)
follow, usually without the person's knowledge
make appear small by comparison
cast a shadow over