different between kindness vs mitzvah

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.

Borrowed from Hebrew ?????? (mitsvá, “commandment”).

mitzvah (plural mitzvahs or mitzvoth)

(Judaism) Any of the 613 commandments of Jewish law
(Judaism) An act of kindness, a good deed.
- 2013, Thomas Pynchon, Bleeding Edge, Vintage 2014, p. 17:
  ‘You heard about them pulling my license. That was indirectly Joel. Who, without meaning to, did me such a mitzvah.’

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