phantasm

As nouns the difference between phantasm and spook

is that phantasm is something seen but having no physical reality; a phantom or apparition while spook is a spirit returning to haunt a place.

As a verb spook is

to scare or frighten.

As a noun phantasm

is something seen but having no physical reality; a phantom or apparition.

As an adjective undefined is

lacking a definition or value.

Phantasm is a related term of revenant.

As nouns the difference between phantasm and revenant

is that phantasm is something seen but having no physical reality; a phantom or apparition while revenant is someone who returns from a long absence.

As an adjective revenant is

.

Incorporeality is a related term of phantasm.

As nouns the difference between incorporeality and phantasm

is that incorporeality is the state or characteristic of being incorporeal while phantasm is something seen but having no physical reality; a phantom or apparition.

As nouns the difference between phantasm and illusion

is that phantasm is something seen but having no physical reality; a phantom or apparition while illusion is .

Manifestation is a related term of phantasm.

As nouns the difference between manifestation and phantasm

is that manifestation is the act or process of becoming manifest while phantasm is something seen but having no physical reality; a phantom or apparition.

As nouns the difference between phantasm and phantasm

is that phantasm is something seen but having no physical reality; a phantom or apparition while phantasm is something seen but having no physical reality; a phantom or apparition.

As nouns the difference between idea and phantasm

is that idea is an abstract archetype of a given thing, compared to which real-life examples are seen as imperfect approximations; pure essence, as opposed to actual examples while phantasm is something seen but having no physical reality; a phantom or apparition.

Phantasm is a related term of wraith.

As nouns the difference between phantasm and wraith

is that phantasm is something seen but having no physical reality; a phantom or apparition while wraith is a ghost or specter, especially seen just after a person's death.