subservience vs subservientness

subservience and subservientness both are nouns.

Word	Noun	Adjective	Verb	Adverb
subservience	Yes	No	No	No
subservientness	Yes	No	No	No

As nouns, subservience and subservientness are synonyms defined as:

subservience (noun)	subservientness (noun)
abject or cringing submissiveness	in a subservient state
the condition of being something that is useful in reaching an end or carrying out a plan
in a subservient state