painless vs easy

painless and easy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
painless	No	Yes	No	No
easy	No	Yes	No	Yes

painless (adjective)	easy (adjective)
not causing physical or psychological pain	posing no difficulty; requiring little effort
requiring little hard work or exertion	free from worry or anxiety
	obtained with little effort or sacrifice, often obtained illegally
	less in demand and therefore readily obtainable
	affording comfort
	marked by moderate steepness
	readily exploited or tricked
	having little impact
	affording pleasure
	in fortunate circumstances financially; moderately rich
	casual and unrestrained in sexual behavior
	not hurried or forced
	not strict

painless (adverb)	easy (adverb)
	in a relaxed manner; or without hardship
	with ease (`easy' is sometimes used informally for `easily')
	without speed (`slow' is sometimes used informally for `slowly')