bodilessness
ghostliness
immateriality
immaterialness
impalpability
imponderability
incorporeality
incorporeity
inextension
intangibility
nonexteriority
occult phenomena
otherworldliness
psychical research
psychicism
psychics
psychism
shadowiness
spirit world
spirituality
spirituousness
supernaturalism
the occult
unearthliness
unsubstantiality
unsubstantialness
unworldliness
bailiwick
discipline
field
field of study
study
subject
subject area
subject field
astrology
clericalism
esotericism
hypnotism
immanence
mesmerism
mumbo-jumbo
mysticism
necromancy
obstructiveness
panentheism
pantheism
parapsychology
phrenology
quietism
spiritism
spiritualism
tea-leaf
theism
theosophy
transcendentalism
wizardry