Final answer:
In professional medical documentation, nontechnical words similar in meaning are generally not included as main terms because medical terminology requires precision for clarity and accuracy.
Step-by-step explanation:
When considering the main terms used in medical terminology, particularly with reference to documenting clinical encounters, several elements are typically included. The reason for a visit is certainly a main term, as it provides the basis for the clinical assessment. Similarly, an anatomic site is another main term that is often recorded to localize the clinical issue. The condition is another principal term because it specifies the patient's health state or any disorders. However, a nontechnical word similar in meaning is not usually included as a main term in professional medical documentation or coding because the precision of medical language is essential for clarity and accuracy.