Affiliation is a related term of friendliness.
As nouns the difference between affiliation and friendliness
is that affiliation is the relationship resulting from affiliating one thing with another while friendliness is the quality of being friendly.
affiliation
English
Noun
(
en noun)
The relationship resulting from affiliating one thing with another.
A club, society or umbrella organisation so formed, especially a trade union.
friendliness
English
Noun
(-)
The quality of being friendly.
Synonyms
* affability
* bonhomie
* geniality
* pleasantness
Antonyms
* hostility
Coordinate terms
* See also
* kindness
* good-heartedness
* good-naturedness