preoccupied vs haunted

preoccupied and haunted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
preoccupied	No	Yes	No	No
haunted	No	Yes	No	No

As adjectives, preoccupied and haunted are synonyms defined as:

preoccupied and haunted: having or showing excessive or compulsive concern with something

Other synonyms of preoccupied include obsessed, taken up.

preoccupied (adjective)	haunted (adjective)
having or showing excessive or compulsive concern with something	having or showing excessive or compulsive concern with something
deeply absorbed in thought	inhabited by or as if by apparitions
	showing emotional affliction or disquiet