offence vs affront

offence and affront both are nouns.

Word	Noun	Adjective	Verb	Adverb
offence	Yes	No	No	No
affront	Yes	No	Yes	No

As nouns, affront is a hyponym of offence; that is, affront is a word with a more specific, narrower meaning than offence:

offence: a lack of politeness; a failure to show regard for others; wounding the feelings of others
affront: a deliberately offensive act or something producing the effect of deliberate disrespect

Other hyponyms of offence include derision, ridicule, indelicacy, insolence, insult, presumption, rebuff, slight.

offence (noun)	affront (noun)
the action of attacking an enemy	a deliberately offensive act or something producing the effect of deliberate disrespect
a transgression that constitutes a violation of what is judged to be right
a lack of politeness; a failure to show regard for others; wounding the feelings of others
a feeling of anger caused by being offended
the team that has the ball (or puck) and is trying to score

offence (verb)	affront (verb)
	treat, mention, or speak to rudely