busy vs occupied

busy and occupied both are adjectives.

Word	Noun	Adjective	Verb	Adverb
busy	No	Yes	Yes	No
occupied	No	Yes	No	No

busy (adjective)	occupied (adjective)
actively or fully engaged or occupied	held or filled or in use
overcrowded or cluttered with detail	seized and controlled as by military invasion
intrusive in a meddling or offensive manner	having ones attention or mind or energy engaged
(of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line)	resided in; having tenants
crowded with or characterized by much activity

busy (verb)	occupied (verb)
keep busy with