paleogeology vs geology

paleogeology and geology both are nouns.

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

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

paleogeology: 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

paleogeology (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