camera vs diaphragm

camera and diaphragm both are nouns.

Word	Noun	Adjective	Verb	Adverb
camera	Yes	No	No	No
diaphragm	Yes	No	No	No

camera (noun)	diaphragm (noun)
equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)	a mechanical device in a camera that controls size of aperture of the lens
television equipment consisting of a lens system that focuses an image on a photosensitive mosaic that is scanned by an electron beam	electro-acoustic transducer that vibrates to receive or produce sound waves
	a contraceptive device consisting of a flexible dome-shaped cup made of rubber or plastic; it is filled with spermicide and fitted over the uterine cervix
	(anatomy) a muscular partition separating the abdominal and thoracic cavities; functions in respiration