ripper vs manslayer

ripper and manslayer both are nouns.

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

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

ripper: a murderer who slashes the victims with a knife
manslayer: a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)

Other hypernyms of ripper include liquidator, murderer.

ripper (noun)	manslayer (noun)
a murderer who slashes the victims with a knife	a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)