mercifulness vs amnesty

mercifulness and amnesty both are nouns.

Word	Noun	Adjective	Verb	Adverb
mercifulness	Yes	No	No	No
amnesty	Yes	No	Yes	No

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

mercifulness: leniency and compassion shown toward offenders by a person or agency charged with administering justice
amnesty: the formal act of liberating someone

Other hyponyms of mercifulness include commutation, re-sentencing, free pardon, pardon, quarter, reprieve, respite.

mercifulness (noun)	amnesty (noun)
leniency and compassion shown toward offenders by a person or agency charged with administering justice	the formal act of liberating someone
a disposition to be kind and forgiving	a warrant granting release from punishment for an offense
the feeling that motivates compassion	a period during which offenders are exempt from punishment

mercifulness (verb)	amnesty (verb)
	grant a pardon to (a group of people)