lissomeness vs litheness

lissomeness and litheness both are nouns.

Word	Noun	Adjective	Verb	Adverb
lissomeness	Yes	No	No	No
litheness	Yes	No	No	No

As nouns, lissomeness and litheness are synonyms defined as:

lissomeness and litheness: the gracefulness of a person or animal that is flexible and supple

Other synonyms of lissomeness include suppleness.

lissomeness (noun)	litheness (noun)
the gracefulness of a person or animal that is flexible and supple	the gracefulness of a person or animal that is flexible and supple