mop vs cleaning device

mop and cleaning device both are nouns.

Word	Noun	Adjective	Verb	Adverb
mop	Yes	No	Yes	No
cleaning device	Yes	No	No	No

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

mop: cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors
cleaning device: any of a large class of implements used for cleaning

Other hypernyms of mop include cleaning equipment, cleaning implement.

mop (noun)	cleaning device (noun)
cleaning implement consisting of absorbent material fastened to a handle; for cleaning floors	any of a large class of implements used for cleaning

mop (verb)	cleaning device (verb)
make a sad face and thrust out one's lower lip
to wash or wipe with or as if with a mop