What is the only way that Australopithecus diffed from apes?

Australopithecus differed from apes primarily in its bipedal locomotion, which allowed it to walk upright on two legs, a significant adaptation for life on the ground. This shift in movement was accompanied by changes in skeletal structure, such as a more human-like pelvis and leg bones. Additionally, Australopithecus exhibited a larger brain size relative to body size compared to contemporary apes, suggesting more complex behaviors and social interactions. These adaptations mark important evolutionary steps toward the genus Homo, which includes modern humans.