annoyance vs infliction

annoyance and infliction both are nouns.

Word	Noun	Adjective	Verb	Adverb
annoyance	Yes	No	No	No
infliction	Yes	No	No	No

As nouns, annoyance and infliction are synonyms defined as:

annoyance and infliction: something or someone that causes trouble; a source of unhappiness

Other synonyms of annoyance include bother, botheration, nuisance, pain, pain in the ass, pain in the neck.

annoyance (noun)	infliction (noun)
the act of troubling or annoying someone	the act of imposing something (as a tax or an embargo)
something or someone that causes trouble; a source of unhappiness	an act causing pain or damage
anger produced by some annoying irritation	something or someone that causes trouble; a source of unhappiness
an unpleasant person who is annoying or exasperating
the psychological state of being irritated or annoyed