subservience vs submissiveness

subservience and submissiveness both are nouns.

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

As nouns, submissiveness is a hypernym of subservience; that is, submissiveness is a word with a broader meaning than subservience:

subservience: abject or cringing submissiveness
submissiveness: the trait of being willing to yield to the will of another person or a superior force etc.

subservience (noun)	submissiveness (noun)
abject or cringing submissiveness	the trait of being willing to yield to the will of another person or a superior force etc.
the condition of being something that is useful in reaching an end or carrying out a plan
in a subservient state