psychonomics vs psychology

psychonomics and psychology both are nouns.

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

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

psychonomics: the branch of psychology that uses experimental methods to study psychological issues
psychology: the science of mental life

Other hypernyms of psychonomics include psychological science.

psychonomics (noun)	psychology (noun)
the branch of psychology that uses experimental methods to study psychological issues	the science of mental life