Fellowship
"1: companionship, company 2 a: community of interest, activity, feeling, or experience b: the state of being a fellow or associate 3: a company of equals or friends : association 4: the quality or state of being comradely"
Stewardship
"the conducting, supervising, or managing of something; especially : the careful and responsible management of something entrusted to one's care "
Partnership
"a relationship resembling a legal partnership and usually involving close cooperation between parties having specified and joint rights and responsibilities"