outrage vs affront

outrage and affront both are nouns.

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

As nouns, affront is a hypernym of outrage; that is, affront is a word with a broader meaning than outrage:

outrage: the act of scandalizing
affront: a deliberately offensive act or something producing the effect of deliberate disrespect

Other hypernyms of outrage include insult.

outrage (noun)	affront (noun)
the act of scandalizing	a deliberately offensive act or something producing the effect of deliberate disrespect
a wantonly cruel act
a disgraceful event
a feeling of righteous anger

outrage (verb)	affront (verb)
strike with disgust or revulsion	treat, mention, or speak to rudely
force (someone) to have sex against their will
violate the sacred character of a place or language