swither vs agitation

swither and agitation both are nouns.

Word	Noun	Adjective	Verb	Adverb
swither	Yes	No	No	No
agitation	Yes	No	No	No

As nouns, agitation is a hypernym of swither; that is, agitation is a word with a broader meaning than swither:

swither (noun)	agitation (noun)
agitation resulting from active worry	disturbance usually in protest
	the act of agitating something; causing it to move around (usually vigorously)
	the feeling of being agitated; not calm
	a state of agitation or turbulent change or development
	a mental state of extreme emotional disturbance