ISO 9001 is known as the mother of all international standards. It sets out the criteria for a quality management system and is the only standard in the family that can be certified to (although this is not a requirement).
ISO 14001 is the international standard that specifies requirements for an effective environmental management systems (EMS). It provides a framework that an organization can follow, rather than establishing environmental performance requirements.
ISO 22000 is a Food Safety Management Systems Standard that can be applied to any organization in the food chain, farm to fork. Becoming certified to ISO 22000 allows a company to show their customers that they have a food safety management system in place.
Social compliance is how a business treats its workers, and the environment it operates in. It is simply the minimal code of conduct that guides the business in regards to how its workers and environment should be treated, in regards to the employee wages, working hours, conditions, and environmental laws. Social compliance basically intends to protect both labor and environment interests.