undergarment vs shimmy

undergarment and shimmy both are nouns.

Word	Noun	Adjective	Verb	Adverb
undergarment	Yes	No	No	No
shimmy	Yes	No	Yes	No

As nouns, shimmy is a hyponym of undergarment; that is, shimmy is a word with a more specific, narrower meaning than undergarment:

undergarment (noun)	shimmy (noun)
a garment worn under other garments	lively dancing (usually to ragtime music) with much shaking of the shoulders and hips
	a woman's sleeveless undergarment
	an abnormal wobble in a motor vehicle (especially in the front wheels)

undergarment (verb)	shimmy (verb)
	dance a shimmy
	tremble or shake