blunder vs gaucherie

blunder and gaucherie both are nouns.

Word	Noun	Adjective	Verb	Adverb
blunder	Yes	No	Yes	No
gaucherie	Yes	No	No	No

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

blunder (noun)	gaucherie (noun)
an embarrassing mistake	a socially awkward or tactless act
	the quality of being rustic or gauche

blunder (verb)	gaucherie (verb)
utter impulsively
make one's way clumsily or blindly
commit a faux pas or a fault or make a serious mistake