psychophysiology vs psychology

psychophysiology and psychology both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychophysiology	Yes	No	No	No
psychology	Yes	No	No	No

As nouns, psychology is a hypernym of psychophysiology; that is, psychology is a word with a broader meaning than psychophysiology:

psychophysiology: the branch of psychology that is concerned with the physiological bases of psychological processes
psychology: the science of mental life

Other hypernyms of psychophysiology include psychological science.

psychophysiology (noun)	psychology (noun)
the branch of psychology that is concerned with the physiological bases of psychological processes	the science of mental life