infraction vs law-breaking

infraction and law-breaking both are nouns.

Word	Noun	Adjective	Verb	Adverb
infraction	Yes	No	No	No
law-breaking	Yes	No	No	No

As nouns, law-breaking is a hypernym of infraction; that is, law-breaking is a word with a broader meaning than infraction:

infraction: a crime less serious than a felony
law-breaking: (criminal law) an act punishable by law; usually considered an evil act

Other hypernyms of infraction include crime, criminal offence, criminal offense.

infraction (noun)	law-breaking (noun)
a crime less serious than a felony	(criminal law) an act punishable by law; usually considered an evil act