gaucherie vs stiffness

gaucherie and stiffness both are nouns.

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

As nouns, stiffness is a hypernym of gaucherie; that is, stiffness is a word with a broader meaning than gaucherie:

gaucherie: the quality of being rustic or gauche
stiffness: the inelegance of someone stiff and unrelaxed (as by embarrassment)

Other hypernyms of gaucherie include awkwardness, clumsiness, gracelessness.

gaucherie (noun)	stiffness (noun)
a socially awkward or tactless act	the physical property of being inflexible and hard to bend
the quality of being rustic or gauche	the property of moving with pain or difficulty
	the inelegance of someone stiff and unrelaxed (as by embarrassment)
	excessive sternness
	firm resoluteness in purpose or opinion or action