buoy vs conical buoy

buoy and conical buoy both are nouns.

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

As nouns, conical buoy is a hyponym of buoy; that is, conical buoy 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
conical buoy: a buoy resembling a cone

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

buoy (noun)	conical buoy (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