cylinder vs drum

cylinder and drum both are nouns.

Word	Noun	Adjective	Verb	Adverb
cylinder	Yes	No	No	No
drum	Yes	No	Yes	No

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

cylinder: a surface generated by rotating a parallel line around a fixed line
drum: a hollow cast iron cylinder attached to the wheel that forms part of the brakes

Other hyponyms of cylinder include brake drum, shank, shank, shank, stem, stalactite, stalagmite, barrel, pipe, tube.

cylinder (noun)	drum (noun)
a cylindrical container for oxygen or compressed air	small to medium-sized bottom-dwelling food and game fishes of shallow coastal and fresh waters that make a drumming noise
a chamber within which piston moves	a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end
a surface generated by rotating a parallel line around a fixed line	a cylindrical metal container, commonly used for shipping or storage of liquids
a solid bounded by a cylindrical surface and two parallel planes (the bases)	a hollow cast iron cylinder attached to the wheel that forms part of the brakes
	the sound of a drum
	a bulging cylindrical shape; hollow with flat ends

cylinder (verb)	drum (verb)
	study intensively, as before an exam
	play a percussion instrument
	make a rhythmic sound