relaxation vs physiology

relaxation and physiology both are nouns.

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

relaxation (noun)	physiology (noun)
freedom from activity (work or strain or responsibility)	processes and functions of an organism
the act of making less strict	the branch of the biological sciences dealing with the functioning of organisms
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
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