palaeontology vs fossilology

palaeontology and fossilology both are nouns.

Word	Noun	Adjective	Verb	Adverb
palaeontology	Yes	No	No	No
fossilology	Yes	No	No	No

As nouns, palaeontology and fossilology are synonyms defined as:

palaeontology and fossilology: the earth science that studies fossil organisms and related remains

Other synonyms of palaeontology include paleontology.

palaeontology (noun)	fossilology (noun)
the earth science that studies fossil organisms and related remains	the earth science that studies fossil organisms and related remains