distortion vs buckle

distortion and buckle both are nouns.

Word	Noun	Adjective	Verb	Adverb
distortion	Yes	No	No	No
buckle	Yes	No	Yes	No

As nouns, buckle is a hyponym of distortion; that is, buckle is a word with a more specific, narrower meaning than distortion:

Other hyponyms of distortion include contortion, crookedness, torsion, tortuosity, tortuousness, warp, gnarl, knot.

distortion (noun)	buckle (noun)
the act of distorting something so it seems to mean something it was not intended to mean	fastener that fastens together two ends of a belt or strap; often has loose prong
the mistake of misrepresenting the facts	a shape distorted by twisting or folding
a change for the worse
an optical phenomenon resulting from the failure of a lens or mirror to produce a good image
a change (usually undesired) in the waveform of an acoustic or analog electrical signal; the difference between two measurements of a signal (as between the input and output signal)
a shape resulting from distortion

distortion (verb)	buckle (verb)
	bend out of shape, as under pressure or from heat
	fasten with a buckle or buckles
	fold or collapse