Can you help me understand the difference?
While not in depth, here is the definition for worship in the Catholic Dictionary by Fr. John Hardon. Following is the definition for hyperdulia, which is the special veneration reserved for Mary.
Term
WORSHIP-Acknowledgment of another’s worth, dignity, or superior position. In religion, worship is given either to God, and then it is adoration, or to the angels and saints, and it is called veneration. Divine worship actually includes three principal acts, namely adoration (or the recognition of God’s infinite perfection), prayer or the asking for divine help, and sacrifice or the offering of something precious to God. Worship as veneration also has three principal forms, whereby the angels and saints are honored for their sanctity, asked to intercede before the divine Majesty, and imitated in their love and service of God. (Etym. Old English
weorthscipe, honor, dignity, reverence:
weorth, worth +ship.)
HYPERDULIA-The special veneration due to the Blessed Virgin Mary. It is substantially less than the cultus latria (adoration), which is due to God alone. But it is higher than the cultus dulia (veneration), due to angels and other saints. As the Church understands the veneration of Mary, it is to be closely associated but subordinated to that of her Son. “The various forms of piety towards the Mother of God, which the Church has approved within the limits of sound and orthodox doctrine according to the dispositions and understanding of the faithful, ensure that while the mother is honored, the Son through whom all things have their being and in whom it has pleased the Father that all fullness should dwell, is rightly loved and glorified and His commandments are observed” (Second Vatican Council, Lumen Gentium, VII, 66). (Etym. Latin hyperdulia, virtue of deep submission.)
Here is a link to the dictionary in case you ever come across terms you don’t understand.
MANDATUM The washing of the feet in the Liturgy of Holy Thursday. In the revised ritual the washing of the feet takes placed after the Gospel, which narrates the same event at the Last Supper. The men who have been chosen are led to chairs prepared for them. Then the priest goes to each man...
www.catholicculture.org