The movements of the scapula can be confusing. I'm not talking about the shoulder joint, the rotator cuff nor the humerus, just about the movements of the scapula. There are 3 pairs of movements that most anatomy students should know about and 2 other pairs of movements that are not useful for most people.
Resources:
https://musculoskeletalkey.com/examination-and-management-of-scapular-dysfunction/
https://www.kenhub.com/en/library/anatomy/shoulder-girdle
https://www.physio-pedia.com/Scapulothoracic_Joint
Struyf, F., Nijs, J., Baeyens, J.-.-P., Mottram, S. and Meeusen, R. (2011), Scapular positioning and movement in unimpaired shoulders, shoulder impingement syndrome, and glenohumeral instability. Scandinavian Journal of Medicine & Science in Sports, 21: 352-358. https://doi.org/10.1111/j.1600-0838.2010.01274.x
Music:
Disco 93 by Gregory David
https://www.epidemicsound.com/track/YrmTwogyAG/