oiliness vs fulsomeness

oiliness and fulsomeness both are nouns.

Word	Noun	Adjective	Verb	Adverb
oiliness	Yes	No	No	No
fulsomeness	Yes	No	No	No

As nouns, oiliness and fulsomeness are synonyms defined as:

Other synonyms of oiliness include oleaginousness, smarminess, unction, unctuousness.

oiliness (noun)	fulsomeness (noun)
consisting of or covered with oil	smug self-serving earnestness
smug self-serving earnestness	excessive but superficial compliments given with affected charm