expostulation vs remonstration

expostulation and remonstration both are nouns.

Word	Noun	Adjective	Verb	Adverb
expostulation	Yes	No	No	No
remonstration	Yes	No	No	No

As nouns, expostulation and remonstration are synonyms defined as:

expostulation and remonstration: the act of expressing earnest opposition or protest

Other synonyms of expostulation include objection, remonstrance.

expostulation (noun)	remonstration (noun)
the act of expressing earnest opposition or protest	the act of expressing earnest opposition or protest
an exclamation of protest or remonstrance or reproof