dust mop vs swob

dust mop and swob both are nouns.

Word	Noun	Adjective	Verb	Adverb
dust mop	Yes	No	No	No
swob	Yes	No	Yes	No

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

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

Other hypernyms of dust mop include mop, swab.

dust mop (noun)	swob (noun)
a dry swab for dusting floors	cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors

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