solecism vs gaucherie

solecism and gaucherie both are nouns.

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

As nouns, solecism and gaucherie are synonyms defined as:

Other synonyms of solecism include faux pas, gaffe, slip.

solecism (noun)	gaucherie (noun)
a socially awkward or tactless act	a socially awkward or tactless act
	the quality of being rustic or gauche