loiterer vs drone

loiterer and drone both are nouns.

Word	Noun	Adjective	Verb	Adverb
loiterer	Yes	No	No	No
drone	Yes	No	Yes	No

As nouns, drone is a hypernym of loiterer; that is, drone is a word with a broader meaning than loiterer:

Other hypernyms of loiterer include dawdler, laggard, lagger, poke, trailer.

loiterer (noun)	drone (noun)
someone who lingers aimlessly in or about a place	stingless male bee in a colony of social bees (especially honeybees) whose sole function is to mate with the queen
	a pipe of the bagpipe that is tuned to produce a single continuous tone
	an aircraft without a pilot that is operated by remote control
	an unchanging intonation
	someone who takes more time than necessary; someone who lags behind

loiterer (verb)	drone (verb)
	talk in a monotonous voice
	make a monotonous low dull sound