self-reproach vs compunction

self-reproach and compunction both are nouns.

Word	Noun	Adjective	Verb	Adverb
self-reproach	Yes	No	No	No
compunction	Yes	No	No	No

As nouns, self-reproach and compunction are synonyms defined as:

self-reproach and compunction: a feeling of deep regret (usually for some misdeed)

Other synonyms of self-reproach include remorse.

self-reproach (noun)	compunction (noun)
the act of blaming yourself	a feeling of deep regret (usually for some misdeed)
a feeling of deep regret (usually for some misdeed)