Mugger is a related term of aggressor.
As nouns the difference between mugger and aggressor
is that mugger is a street robber or mugger can be a large crocodile crocodilus palustris of southwest asia, having a very broad wrinkled snout while aggressor is aggressor.
mugger
English
Etymology 1
Noun
(
en noun)
A street robber.
A person who makes exaggerated faces, as a performance; a gurner.
Etymology 2
From (etyl).
Noun
(
en noun)
A large crocodile Crocodilus palustris of southwest Asia, having a very broad wrinkled snout.
aggressor
English
Alternative forms
* (l) (obsolete)
Noun
(
en noun)
The person or country that first attacks or makes an aggression; that begins hostility or a quarrel; an assailant.