As nouns the difference between calmness and serenity
is that calmness is the state of being calm; tranquillity; silence while serenity is the state of being serene; calmness; peacefulness.
As a proper noun Serenity is
{{given name|female|from=English}} in general use since the 1990s.
calmness
English
Noun
(uncountable) The state of being calm; tranquillity; silence.
(countable) The product of being calm.
Synonyms
* See also
Antonyms
* disturbance
serenity
English
Noun
(serenities)
The state of being serene; calmness; peacefulness.
A lack of agitation or disturbance.
A title given to a reigning prince or similar dignitary.
Synonyms
* sereneness
* tranquility / tranquillity
* harmony
* peace
; title
* Serene Highness
See also
*