swab vs dry mop

swab and dry mop both are nouns.

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

As nouns, dry mop is a hyponym of swab; that is, dry 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
dry mop: a dry swab for dusting floors

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

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