slit lamp vs electric lamp

slit lamp and electric lamp both are nouns.

Word	Noun	Adjective	Verb	Adverb
slit lamp	Yes	No	No	No
electric lamp	Yes	No	No	No

As nouns, electric lamp is a hypernym of slit lamp; that is, electric lamp is a word with a broader meaning than slit lamp:

slit lamp: (ophthalmology) a lamp that emits a narrow but intense beam of light that enables an ophthalmologist, using a microscope, to view the retina and optic nerve
electric lamp: a lamp powered by electricity

slit lamp (noun)	electric lamp (noun)
(ophthalmology) a lamp that emits a narrow but intense beam of light that enables an ophthalmologist, using a microscope, to view the retina and optic nerve	a lamp powered by electricity