Mass murderer noun – A person who is responsible for the deaths of many victims in a single incident. Terminator and mass murderer are semantically related. In some cases you can use "Terminator" instead a noun phrase "Mass murderer".
Terminator noun – Someone who exterminates (especially someone whose occupation is the extermination of troublesome rodents and insects). Mass murderer and terminator are semantically related. You can use "Mass murderer" instead a noun "Terminator". Nearby Words: terminate, termination, terminated, terminating