candid camera vs camera

candid camera and camera both are nouns.

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

As nouns, camera is a hypernym of candid camera; that is, camera is a word with a broader meaning than candid camera:

candid camera: a miniature camera with a fast lens
camera: equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)

Other hypernyms of candid camera include photographic camera.

candid camera (noun)	camera (noun)
a miniature camera with a fast lens	equipment for taking photographs (usually consisting of a lightproof box with a lens at one end and light-sensitive film at the other)
	television equipment consisting of a lens system that focuses an image on a photosensitive mosaic that is scanned by an electron beam