optics vs physics

optics and physics both are nouns.

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

As nouns, physics is a hypernym of optics; that is, physics is a word with a broader meaning than optics:

Other hypernyms of optics include natural philosophy.

optics (noun)	physics (noun)
optical properties	the science of matter and energy and their interactions
the branch of physics that studies the physical properties of light	the physical properties, phenomena, and laws of something