different between familiarity vs friendliness

English

From Middle French familiarité, from Latin famili?rit?tem. Displaced native Old English h?wc?þnes.

Morphologically familiar +? -ity

familiarity (countable and uncountable, plural familiarities)

The state of being extremely friendly; intimacy.
- 1677, Hannah Woolley, The Compleat Servant-Maid, London: T. Passinger, p. 2,^[1]
  Do not keep familiarity with any but those, with whom you may improve your time.
Undue intimacy; inappropriate informality, impertinence.
An instance of familiar behaviour.
Close or habitual acquaintance with someone or something; understanding or recognition acquired from experience.

friendly +? -ness

friendliness (usually uncountable, plural friendlinesses)

the quality of being friendly
Synonyms: affability, amicability, bonhomie, geniality, pleasantness
Antonyms: hostility, unfriendliness

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