sidle vs sashay

sidle is not a noun while sashay is a noun.

Word	Noun	Adjective	Verb	Adverb
sidle	No	No	Yes	No
sashay	Yes	No	Yes	No

As verbs, sidle and sashay are synonyms defined as:

sidle (noun)	sashay (noun)
	(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

sidle (verb)	sashay (verb)
move sideways	to walk with a lofty proud gait, often in an attempt to impress others
move unobtrusively or furtively	move sideways
	perform a chasse step, in ballet