headhunter vs head-shrinker

headhunter and head-shrinker both are nouns.

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

As nouns, headhunter and head-shrinker are synonyms defined as:

headhunter and head-shrinker: a savage who cuts off and preserves the heads of enemies as trophies

headhunter (noun)	head-shrinker (noun)
a savage who cuts off and preserves the heads of enemies as trophies	a savage who cuts off and preserves the heads of enemies as trophies
a recruiter of personnel (especially for corporations)	a physician who specializes in psychiatry