Coracoid process is a kind of epiphysis -

Atavistic epiphysis Phylogenetically an independent bone, which in man becomes fused to another bone Examples: Coracoid process of the scapula Posterior tubercle of talus Os trigonum TYPES OF EPIPHYSES: 1. Pressure epiphysis  Articular and takes part in weight transmission Examples: Head of femur Condyles of tibia Lower end of radius 2. Traction epiphysis Non articular and does not take part in weight transmission Provide attachment to a tendon which exerts traction Examples: Trochanter of femur Tubercles of humerus Mastoid process 3. Atavistic epiphysis Phylogenetically an independent bone, which in man becomes fused to another bone  Examples:Coracoid process of the scapula Posterior tubercle of talus Os trigonum 4. Aberrant epiphysis Not always present Examples: Head of 1 st metacarpal Base of other metacarpals