miniskirt vs skirt

miniskirt and skirt both are nouns.

Word	Noun	Adjective	Verb	Adverb
miniskirt	Yes	No	No	No
skirt	Yes	No	Yes	No

As nouns, skirt is a hypernym of miniskirt; that is, skirt is a word with a broader meaning than miniskirt:

miniskirt (noun)	skirt (noun)
a very short skirt	a garment hanging from the waist; worn mainly by girls and women
	cloth covering that forms the part of a garment below the waist
	informal terms for a (young) woman
	(Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar

miniskirt (verb)	skirt (verb)
	avoid or try to avoid fulfilling, answering, or performing (duties, questions, or issues)
	extend on all sides of simultaneously; encircle
	pass around or about; move along the border
	form the edge of