Dr. Wright defines the following terms so we can get a grasp the nature and the impact of grief on our lives:

Grief is defined as Intense emotional suffering caused by loss, disaster, misfortune, etc. Acute sorrow - deep sadness. The word is derived from the Latin verb meaning to burden. Indeed, you do feel burdened. You are carrying a heavy load of feelings.

Mourn is defined as to feel or express sorrow. Mourning is the expression of grief. The word is derived from a Gothic verb meaning to be anxious, and it comes ultimately from an Indo-European base meaning to remember; to think of. Mourning involves remembering and thinking of the deceased, and this makes you feel anxious or uncomfortable.