swob vs sponge mop

swob and sponge mop both are nouns.

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

As nouns, sponge mop is a hyponym of swob; that is, sponge mop 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
sponge mop: a wet mop with a sponge as the absorbent

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

swob (noun)	sponge mop (noun)
cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors	a wet mop with a sponge as the absorbent

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