The difference between pectoral and pelvic girdle is mainly due to the following factors like the type of bones contributing to the formation, association of bones and articulations.
The Pelvic Girdle and Pelvis
Differentiate between Pectoral girdle and pelvic girdle?
Pectoral Girdle Bones and Parts: Scapula, Clavicle, Acromion and Glenoid Cavity
The Pectoral Girdle – Anatomy & Physiology
PECTORAL AND PELVIC GIRDLE
Pectoral Girdle - an overview
Difference Between Pectoral and Pelvic Girdle (with Comparison Chart) - Biology Reader
Gujrati Solution] Pectoral girdle and pelvic girdle
The Pelvic Girdle - Video Tutorials & Practice Problems