preoccupied vs bemused

preoccupied and bemused both are adjectives.

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

As adjectives, preoccupied and bemused are synonyms defined as:

Other synonyms of preoccupied include lost.

preoccupied (adjective)	bemused (adjective)
having or showing excessive or compulsive concern with something	perplexed by many conflicting situations or statements; filled with bewilderment
deeply absorbed in thought	deeply absorbed in thought