So many thoughts and feelings fill our minds and our hearts when someone we love dies. Collectively, these thoughts and feelings are what we mean by the term "grief." In other words, grief is what's inside us. When we express our grief-by crying, talking to others, sharing memories, taking part in a funeral ceremony-we are mourning. Mourning is grief communicated outwardly. When we grieve but do not mourn, our sadness can feel unbearable and our many other emotions can fester inside of us. Mourning helps us begin to heal. The funeral is an essential time for mourning.