unctuousness vs unction

unctuousness and unction both are nouns.

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

As nouns, unctuousness and unction are synonyms defined as:

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

unctuousness (noun)	unction (noun)
smug self-serving earnestness	anointing as part of a religious ceremony or healing ritual
	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