geodesy vs geophysics

geodesy and geophysics both are nouns.

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

As nouns, geophysics is a hypernym of geodesy; that is, geophysics is a word with a broader meaning than geodesy:

geodesy: the branch of geology that studies the shape of the earth and the determination of the exact position of geographical points
geophysics: geology that uses physical principles to study properties of the earth

Other hypernyms of geodesy include geophysical science.

geodesy (noun)	geophysics (noun)
the branch of geology that studies the shape of the earth and the determination of the exact position of geographical points	geology that uses physical principles to study properties of the earth