Manager
Part of speech: noun
Definition: A person whose job is to manage something, such as a business, a restaurant or a sports team. The head coach. An administrator, for a singer or group;
Consultant
Part of speech: noun
Definition: a person or party that is consulted.a person whose occupation is to be consulted for their expertise, advice, or help in an area or specialty. Alternatively, a party whose business is to be similarly consulted.