different between kindness vs niceness

English

From Middle English kindenesse, equivalent to kind +? -ness.

kindness (countable and uncountable, plural kindnesses)

The state of being kind.
An instance of kind or charitable behaviour.
How can I thank you for your many kindnesses?
Do me a kindness and leave.

From nice +? -ness.

niceness (countable and uncountable, plural nicenesses)

(obsolete) Silliness; folly. [16th c.]
Effeminacy; indulgence in soft living or luxuriousness. [from 16th c.]
(obsolete) Shyness; reserve. [16th-19th c.]
- 1748, Samuel Richardson, Clarissa, Letter 63:
  Methinks a young create of niceness should be less ready to write to one man, when she is designed to be another's.
Fastidiousness; fine sensitivity. [from 17th c.]
Pleasantness, especially of behaviour or personality; agreeableness. [from 19th c.]
(computing, Unix) A value determining how much processor time to concede to a running process. (See also nice (verb), renice.)

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