dry mop vs swab

dry mop and swab both are nouns.

Word	Noun	Adjective	Verb	Adverb
dry mop	Yes	No	No	No
swab	Yes	No	Yes	No

As nouns, swab is a hypernym of dry mop; that is, swab is a word with a broader meaning than dry mop:

dry mop: a dry swab for dusting floors
swab: cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors

Other hypernyms of dry mop include mop, swob.

dry mop (noun)	swab (noun)
a dry swab for dusting floors	cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors
	implement consisting of a small piece of cotton that is used to apply medication or cleanse a wound or obtain a specimen of a secretion

dry mop (verb)	swab (verb)
	wash with a swab or a mop
	apply (usually a liquid) to a surface