shimmy vs undergarment

shimmy and undergarment both are nouns.

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

As nouns, undergarment is a hypernym of shimmy; that is, undergarment is a word with a broader meaning than shimmy:

Other hypernyms of shimmy include unmentionable.

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

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