gravel vs vex

gravel is a noun but vex is not a noun.

Word	Noun	Adjective	Verb	Adverb
gravel	Yes	No	Yes	No
vex	No	No	Yes	No

As verbs, gravel and vex are synonyms defined as:

Other synonyms of gravel include amaze, baffle, beat, bewilder, dumbfound, flummox, get, mystify, nonplus, perplex, pose, puzzle, stick, stupefy.

As verbs, gravel and vex are synonyms defined as:

gravel and vex: cause annoyance in; disturb, especially by minor irritations

Other synonyms of gravel include annoy, bother, chafe, devil, get at, get to, irritate, nark, nettle, rag, rile.

gravel (noun)	vex (noun)
rock fragments and pebbles

gravel (verb)	vex (verb)
be a mystery or bewildering to	be a mystery or bewildering to
cover with gravel	subject to prolonged examination, discussion, or deliberation
cause annoyance in; disturb, especially by minor irritations	change the arrangement or position of
	cause annoyance in; disturb, especially by minor irritations
	disturb the peace of mind of; afflict with mental agitation or distress