oceanology vs oceanography

oceanology and oceanography both are nouns.

Word	Noun	Adjective	Verb	Adverb
oceanology	Yes	No	No	No
oceanography	Yes	No	No	No

As nouns, oceanology and oceanography are synonyms defined as:

oceanology and oceanography: the branch of science dealing with physical and biological aspects of the oceans

oceanology (noun)	oceanography (noun)
the branch of science dealing with physical and biological aspects of the oceans	the branch of science dealing with physical and biological aspects of the oceans