geology vs geophysics

geology and geophysics both are nouns.

Word	Noun	Adjective	Verb	Adverb
geology	Yes	No	No	No
geophysics	Yes	No	No	No

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

geology: a science that deals with the history of the earth as recorded in rocks
geophysics: geology that uses physical principles to study properties of the earth

geology (noun)	geophysics (noun)
a science that deals with the history of the earth as recorded in rocks	geology that uses physical principles to study properties of the earth