As nouns the difference between infraction and transgression
is that infraction is (legal) a minor offence, petty crime while transgression is a violation of a law, command or duty.
What is another term for transgression?
(or offence), sin, trespass, violation, wrongdoing.
What does transgression mean?
: an act, process, or instance of transgressing: such as. a : infringement or violation of a law, command, or duty. b : the spread of the sea over land areas and the consequent unconformable deposit of sediments on older rocks.