buoy vs nun

buoy and nun both are nouns.

Word	Noun	Adjective	Verb	Adverb
buoy	Yes	No	Yes	No
nun	Yes	No	No	No

As nouns, nun is a hyponym of buoy; that is, nun is a word with a more specific, narrower meaning than buoy:

buoy: a float attached by rope to the seabed to mark channels in a harbor or underwater hazards; typically brightly-coloured
nun: a buoy resembling a cone

Other hyponyms of buoy include acoustic buoy, can, can buoy, conical buoy, nun buoy, spar buoy.

buoy (noun)	nun (noun)
a float attached by rope to the seabed to mark channels in a harbor or underwater hazards; typically brightly-coloured	a buoy resembling a cone
	a woman religious
	the 14th letter of the Hebrew alphabet