swob vs dustmop

swob and dustmop both are nouns.

Word	Noun	Adjective	Verb	Adverb
swob	Yes	No	Yes	No
dustmop	Yes	No	No	No

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

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

Other hyponyms of swob include dry mop, dust mop, sponge mop.

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

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