botheration vs irritant

botheration and irritant both are nouns.

Word	Noun	Adjective	Verb	Adverb
botheration	Yes	No	No	No
irritant	Yes	No	No	No

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

botheration: something or someone that causes trouble; a source of unhappiness
irritant: something that causes irritation and annoyance

Other hyponyms of botheration include nuisance, thorn, plague.

botheration (noun)	irritant (noun)
something or someone that causes trouble; a source of unhappiness	something that causes irritation and annoyance
the psychological state of being irritated or annoyed