Answer
Based on official Jordanian legal texts
Jordanian law distinguishes the custodian from the guardian, each with a different role. The custodian handles the child's daily care — upbringing, protection, and what relates to his living — and Article 170 of the Personal Status Law makes the biological mother most entitled to custody, then those after her in order.
The guardian holds the lawful authority over the minor's major affairs. Article 184 provides that the guardian has the right to oversee the child's affairs, upbringing, and education, and Article 223 provides that the minor's guardian is his father, then his trustee, then the true grandfather, then the court or whom it appoints. Guardianship concerns pivotal decisions such as education, travel, and funds.
The two roles may combine in one person or be separate: the mother may be custodian while the father remains guardian, so custody does not entail guardianship, nor the reverse.
Assessing who holds custody and who holds guardianship remains within the Sharia Court's competence on the facts of each case.
This is a general explanation based on Jordanian Personal Status Law and does not replace advice from a qualified lawyer in a specific dispute.