psychoanalyst vs head-shrinker

psychoanalyst and head-shrinker both are nouns.

Word	Noun	Adjective	Verb	Adverb
psychoanalyst	Yes	No	No	No
head-shrinker	Yes	No	No	No

As nouns, head-shrinker is a hypernym of psychoanalyst; that is, head-shrinker is a word with a broader meaning than psychoanalyst:

Other hypernyms of psychoanalyst include psychiatrist, shrink.

psychoanalyst (noun)	head-shrinker (noun)
a licensed practitioner of psychoanalysis	a savage who cuts off and preserves the heads of enemies as trophies
	a physician who specializes in psychiatry