Shoulder Girdle or Shoulder Complex?

What is the shoulder girdle or shoulder complex? Is there a difference when you use these two different words when it comes to the shoulder?

Kinematics and Kinetics of Shoulder Complex, Elbow, and Wrist

Anatomy of the Shoulder

Kinesiology of the Shoulder Complex

The Sports Massage Studio, Ageism in Sport, Congleton

Shoulder Joint Anatomy & Function - Shoulder Pain Explained

Biomechanics of Shoulder Complex

Shoulder Joint: Anatomy Concise Medical Knowledge

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Two Minutes of Anatomy: Shoulder Joints

Shoulder Joint Complex - ppt video online download

Shoulder complex and its complexity – Kaila June Keliikuli