diligent vs busy

diligent and busy both are adjectives.

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

diligent (adjective)	busy (adjective)
characterized by care and perseverance in carrying out tasks	actively or fully engaged or occupied
quietly and steadily persevering especially in detail or exactness	overcrowded or cluttered with detail
	intrusive in a meddling or offensive manner
	(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)
	crowded with or characterized by much activity

diligent (verb)	busy (verb)
	keep busy with