relaxation vs laziness

relaxation and laziness both are nouns.

Word	Noun	Adjective	Verb	Adverb
relaxation	Yes	No	No	No
laziness	Yes	No	No	No

As nouns, laziness is a hyponym of relaxation; that is, laziness is a word with a more specific, narrower meaning than relaxation:

Other hyponyms of relaxation include bed rest, bedrest, lie-in, dormancy, quiescence, quiescency, sleeping, leisure.

relaxation (noun)	laziness (noun)
freedom from activity (work or strain or responsibility)	apathy and inactivity in the practice of virtue (personified as one of the deadly sins)
the act of making less strict	relaxed and easy activity
a method of solving simultaneous equations by guessing a solution and then reducing the errors that result by successive approximations until all the errors are less than some specified amount	inactivity resulting from a dislike of work
an occurrence of control or strength weakening
a feeling of refreshing tranquility and an absence of tension or worry
(physics) the exponential return of a system to equilibrium after a disturbance
(physiology) the gradual lengthening of inactive muscle or muscle fibers