palliation vs extenuation

palliation and extenuation both are nouns.

Word	Noun	Adjective	Verb	Adverb
palliation	Yes	No	No	No
extenuation	Yes	No	No	No

As nouns, palliation and extenuation are synonyms defined as:

palliation and extenuation: to act in such a way as to cause an offense to seem less serious

Other synonyms of palliation include mitigation.

palliation (noun)	extenuation (noun)
easing the severity of a pain or a disease without removing the cause	to act in such a way as to cause an offense to seem less serious
to act in such a way as to cause an offense to seem less serious	a partial excuse to mitigate censure; an attempt to represent an offense as less serious than it appears by showing mitigating circumstances