camera lucida vs optical device

camera lucida and optical device both are nouns.

Word	Noun	Adjective	Verb	Adverb
camera lucida	Yes	No	No	No
optical device	Yes	No	No	No

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

camera lucida: an optical device consisting of an attachment that enables an observer to view simultaneously the image and a drawing surface for sketching it
optical device: a device for producing or controlling light

camera lucida (noun)	optical device (noun)
an optical device consisting of an attachment that enables an observer to view simultaneously the image and a drawing surface for sketching it	a device for producing or controlling light