What term is used to describe the comparison of the two sides of the face to observe their similarities and differences?

The term that accurately describes the comparison of the two sides of the face to observe their similarities and differences is "bilateral." In this context, bilateral refers to the consideration of both sides of the face, highlighting how each side corresponds to the other in structure and appearance. This assessment is crucial in various fields, including art, design, and anatomy, as it allows for the evaluation of symmetry, proportion, and overall aesthetic appeal.

While "symmetrical" might seem relevant, it specifically denotes having equal or identical parts on both sides, rather than the act of comparison itself. "Asymmetrical" refers to a lack of symmetry, which involves recognizing differences rather than similarities. "Equilibrium" generally describes a state of balance, but it does not specifically relate to facial comparison or analysis. Thus, "bilateral" is the most precise term for this description, as it encompasses the comparative nature of assessing both sides of the face.