swab vs dust mop

swab and dust mop both are nouns.

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

As nouns, dust mop is a hyponym of swab; that is, dust mop is a word with a more specific, narrower meaning than swab:

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

Other hyponyms of swab include dry mop, dustmop, sponge mop.

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

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