fret vs rile

fret is a noun but rile is not a noun.

Word	Noun	Adjective	Verb	Adverb
fret	Yes	No	Yes	No
rile	No	No	Yes	No

As verbs, rile is a hypernym of fret; that is, rile is a word with a broader meaning than fret:

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

As verbs, rile is a hypernym of fret; that is, rile is a word with a broader meaning than fret:

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

fret (noun)	rile (noun)
a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of the desired pitch
an ornamental pattern consisting of repeated vertical and horizontal lines (often in relief)
a spot that has been worn away by abrasion or erosion
agitation resulting from active worry

fret (verb)	rile (verb)
wear away or erode	make turbid by stirring up the sediments of
remove soil or rock	cause annoyance in; disturb, especially by minor irritations
cause friction
be too tight; rub or press
decorate with an interlaced design
carve a pattern into
be agitated or irritated
cause annoyance in
gnaw into; make resentful or angry
worry unnecessarily or excessively
become or make sore by or as if by rubbing
provide (a musical instrument) with frets