I've dealt with lumbar back pain for a few years on and off, I think the lumbar region is the most common area of the back for pain.
the lumbar region is sometimes referred to as the lower spine
Back pain
Back pain is pain felt in the back. The back is divided into neck pain (cervical), middle back pain (thoracic), lower back pain (lumbar) or coccydynia (tailbone or sacral pain) based on the segment affected. The lumbar area is the most common area affected. Episodes of back pain may be acute, sub-acute, or chronic depending on the duration. The pain may be characterized as a dull ache, shooting or piercing pain, or a burning sensation. Discomfort
Lumbar
In tetrapod anatomy, lumbar is an adjective that means "of or pertaining to the abdominal segment of the torso, between the diaphragm and the sacrum."
The lumbar region is sometimes referred to as the lower spine, or as an area of the back in its proximity.
In human anatomy the five lumbar vertebrae (vertebrae in the lumbar region of the back) are the largest and strongest in the movable part of the spinal column, and can be distinguished by the absence of a foramen in the