Теория:

To speak about friendship, you should know the proper vocabulary. Here is the vocabulary connected with it. Part 2
  
friendship-day.jpg
  
Esteem - respect for or a good opinion of someone

Familiarity - friendly and informal behaviour

Favor - a kind action that you do for someone

Fondness - happiness and love

Friendliness - making friends

Fusion - an occasion when two or more things join or are combined

League - a group of teams playing a sport who take part in competitions between each other

Partiality - the fact of unfairly preferring or approving of something

Regard - to look carefully at something or someone

Sociability - the quality of liking to meet and spend time with other people
 
Examples:

His excessive familiarity offended her.

She called to ask me a favour.

George's fondness for fishing was well known.
Источники:
http://www.thesaurus.com/
www.csjcanada.org
http://dictionary.cambridge.org