butcher vs manslayer

butcher and manslayer both are nouns.

Word	Noun	Adjective	Verb	Adverb
butcher	Yes	No	Yes	No
manslayer	Yes	No	No	No

As nouns, manslayer is a hypernym of butcher; that is, manslayer is a word with a broader meaning than butcher:

butcher: a brutal indiscriminate murderer
manslayer: a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)

Other hypernyms of butcher include liquidator, murderer.

butcher (noun)	manslayer (noun)
a person who slaughters or dresses meat for market	a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)
a brutal indiscriminate murderer
a retailer of meat
someone who makes mistakes because of incompetence

butcher (verb)	manslayer (verb)
kill (animals) usually for food consumption