disquiet vs anxiousness

disquiet and anxiousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
disquiet	Yes	No	Yes	No
anxiousness	Yes	No	No	No

As nouns, disquiet and anxiousness are synonyms defined as:

disquiet and anxiousness: a feeling of mild anxiety about possible developments

disquiet (noun)	anxiousness (noun)
the trait of seeming ill at ease	a feeling of mild anxiety about possible developments
a feeling of mild anxiety about possible developments	(psychiatry) a relatively permanent state of worry and nervousness occurring in a variety of mental disorders, usually accompanied by compulsive behavior or attacks of panic

disquiet (verb)	anxiousness (verb)
disturb in mind or make uneasy or cause to be worried or alarmed