optics vs holography

optics and holography both are nouns.

Word	Noun	Adjective	Verb	Adverb
optics	Yes	No	No	No
holography	Yes	No	No	No

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

optics: the branch of physics that studies the physical properties of light
holography: the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image

Other hyponyms of optics include catoptrics.

optics (noun)	holography (noun)
optical properties	the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image
the branch of physics that studies the physical properties of light