vexer vs annoyer

vexer and annoyer both are nouns.

Word	Noun	Adjective	Verb	Adverb
vexer	Yes	No	No	No
annoyer	Yes	No	No	No

As nouns, vexer and annoyer are synonyms defined as:

vexer and annoyer: someone given to teasing (as by mocking or stirring curiosity)

Other synonyms of vexer include tease, teaser.

vexer (noun)	annoyer (noun)
someone given to teasing (as by mocking or stirring curiosity)	someone given to teasing (as by mocking or stirring curiosity)