A consultant is an expert who gives proficient or master counsel in a specific territory, for example, security, the board, bookkeeping, law, HR, showcasing, back, building, science or any of numerous other particular fields.
An advisor is normally a specialist or an expert in a particular field and has a wide information of the topic. The job of advisor outside the restorative circle (where the term is utilized explicitly for a review of specialist) can fall under one of two general classes:
Internal consultant – someone who operates within an organization but is available to be consulted on areas of specialism by other departments or individuals (acting as clients).
External consultant – someone who is employed externally (either by a firm or some other agency) whose expertise is provided on a temporary basis, usually for a fee. As such this type of consultant generally engages with multiple and changing clients.
The overall impact of a consultant is that clients have access to deeper levels of expertise than would be feasible for them to retain in-house, and may purchase only as much service from the outside consultant as desired.