molest vs gravel

molest is not a noun while gravel is a noun.

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

As verbs, gravel is a hypernym of molest; that is, gravel is a word with a broader meaning than molest:

Other hypernyms of molest include annoy, bother, chafe, devil, get at, get to, irritate, nark, nettle, rag, rile, vex.

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

molest (verb)	gravel (verb)
annoy continually or chronically	be a mystery or bewildering to
harass or assault sexually; make indecent advances to	cover with gravel
	cause annoyance in; disturb, especially by minor irritations