bummer vs vexation

bummer and vexation both are nouns.

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

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

Other hypernyms of bummer include annoyance, botheration, irritation.

bummer (noun)	vexation (noun)
an experience that is irritating or frustrating or disappointing	the act of troubling or annoying someone
a bad reaction to a hallucinogenic drug	something or someone that causes anxiety; a source of unhappiness
	anger produced by some annoying irritation
	the psychological state of being irritated or annoyed