oiliness vs unction

oiliness and unction both are nouns.

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

As nouns, oiliness and unction are synonyms defined as:

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

oiliness (noun)	unction (noun)
consisting of or covered with oil	anointing as part of a religious ceremony or healing ritual
smug self-serving earnestness	semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation
	smug self-serving earnestness
	excessive but superficial compliments given with affected charm