torment vs vexation

torment and vexation both are nouns.

Word	Noun	Adjective	Verb	Adverb
torment	Yes	No	Yes	No
vexation	Yes	No	No	No

As nouns, vexation is a hypernym of torment; that is, vexation is a word with a broader meaning than torment:

Other hypernyms of torment include annoyance, chafe.

torment (noun)	vexation (noun)
the act of harassing someone	the act of troubling or annoying someone
a severe affliction	something or someone that causes anxiety; a source of unhappiness
intense feelings of suffering; acute mental or physical pain	anger produced by some annoying irritation
extreme mental distress	the psychological state of being irritated or annoyed
a feeling of intense annoyance caused by being tormented
unbearable physical pain

torment (verb)	vexation (verb)
subject to torture
torment emotionally or mentally
treat cruelly