palaeogeology vs geology

palaeogeology and geology both are nouns.

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

As nouns, geology is a hypernym of palaeogeology; that is, geology is a word with a broader meaning than palaeogeology:

palaeogeology: the study of geologic features once at the surface of the earth but now buried beneath rocks
geology: a science that deals with the history of the earth as recorded in rocks

palaeogeology (noun)	geology (noun)
the study of geologic features once at the surface of the earth but now buried beneath rocks	a science that deals with the history of the earth as recorded in rocks