is an in depth investigation of the profitability of the business idea to be converted into a business enterprise.

is an assessment of the practicality of a project or system.

is the investigation or exercise of care that a reasonable business or person is normally expected to take before entering into an agreement or contract with another party or an act with a certain standard of care.

researching and evaluating a stock or industry to determine how it is likely to perform and whether it suits a given investor.