contra danse vs sashay

contra danse and sashay both are nouns.

Word	Noun	Adjective	Verb	Adverb
contra danse	Yes	No	Yes	No
sashay	Yes	No	Yes	No

As nouns, sashay is a hyponym of contra danse; that is, sashay is a word with a more specific, narrower meaning than contra danse:

contra danse: a type of folk dance in which couples are arranged in sets or face one another in a line
sashay: a square dance figure; partners circle each other taking sideways steps

Other hyponyms of contra danse include longways, longways dance, square dance, square dancing, do-si-do, promenade, swing, landler.

contra danse (noun)	sashay (noun)
a type of folk dance in which couples are arranged in sets or face one another in a line	(ballet) quick gliding steps with one foot always leading
	a square dance figure; partners circle each other taking sideways steps
	a journey taken for pleasure

contra danse (verb)	sashay (verb)
perform a contradance	to walk with a lofty proud gait, often in an attempt to impress others
	move sideways
	perform a chasse step, in ballet