Dr. James Alonzo Nelson , MD

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

A person who contracts to supply certain materials or do certain work for a stipulated sum; esp., one whose business is contracting work in any of the building trades. For purposes of the taxonomy, a person who contracts to complete home repairs or modifications to accommodate a health condition (e.g. wheelchair ramp, kitchen counter lowering).