1) Commemoration 2) Memorialisation 
Memorialization generally refers to the process of preserving memories of people or events. It can be a form of address or petition, or a ceremony of remembrance or commemoration. ==Memorialization as a Human Right== Memorialization is a universal need for both those being memorialized and those who are grieving. Although historically it was limit...
a ceremony to honor the memory of someone or something