camaraderie

camaraderie

noun. a spirit of good friendship and loyalty among friends; rapport

"Working for a common cause fosters a high degree of camaraderie in the office."
“I love football and the teamwork and camaraderie."
"Activities such as training for a marathon, volunteering, taking yoga classes or attending a skill-acquisition workshop are all good ways to  build team camaraderie."

http://www.vocabulary.com/dictionary/camaraderie