sensitiveness vs physiology

sensitiveness and physiology both are nouns.

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

sensitiveness (noun)	physiology (noun)
the ability to respond to physical stimuli or to register small physical amounts or differences	processes and functions of an organism
the ability to respond to affective changes in your interpersonal environment	the branch of the biological sciences dealing with the functioning of organisms
(physiology) responsiveness to external stimuli; the faculty of sensation
sensitivity to emotional feelings (of self and others)