clemency vs commutation

clemency and commutation both are nouns.

Word	Noun	Adjective	Verb	Adverb
clemency	Yes	No	No	No
commutation	Yes	No	No	No

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

clemency: leniency and compassion shown toward offenders by a person or agency charged with administering justice
commutation: (law) the reduction in severity of a punishment imposed by law

Other hyponyms of clemency include re-sentencing, amnesty, free pardon, pardon, quarter, reprieve, respite.

clemency (noun)	commutation (noun)
leniency and compassion shown toward offenders by a person or agency charged with administering justice	the travel of a commuter
good weather with comfortable temperatures	(law) the reduction in severity of a punishment imposed by law
	the act of putting one thing or person in the place of another:
	a warrant substituting a lesser punishment for a greater one