Politeness is a synonym of complaisance.
As nouns the difference between politeness and complaisance
is that politeness is the quality of being polite while complaisance is the quality of being complaisant, amiable or agreeable.
politeness
Noun
(en-noun)
The quality of being polite.
Synonyms
* (the act of being polite): affability, civility, courtliness, etiquette
Antonyms
* (the act of being polite): impoliteness, rudeness
complaisance
English
Alternative forms
* complaisaunce (qualifier)
Noun
(-)
The quality of being complaisant, amiable or agreeable.