smarminess vs unctuousness

smarminess and unctuousness both are nouns.

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

As nouns, smarminess and unctuousness are synonyms defined as:

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

smarminess (noun)	unctuousness (noun)
smug self-serving earnestness	smug self-serving earnestness