There are a variety of synonyms for the term "pubic arch," depending on context and usage. Some common alternatives include "pubic arch angle," "pubic arch width," and "pubopubic angle," which all refer to the measurement of the triangular area formed by the bones of the pelvis where they meet at the front of the body. Other terms that may be used in place of pubic arch include "ischial arch," which refers to the space formed by the two ischial bones at the back of the pelvis, and "pelvic inlet," which describes the opening at the top of the pelvis through which the baby must pass during childbirth.