Lamentation
Part of speech: noun
Definition: The act of lamenting. A sorrowful cry; a lament. Specifically, mourning. lamentatio, (part of) a liturgical Bible text (from the book of Job) and its musical settings, usually in the plural; hence, any dirge A group of swans.
Example sentence: There is no harm in patience, and no profit in lamentation. Death is easier to bear (than) that which precedes it, and more severe than that which comes after it. Remember the death of the Apostle of God, and your sorrow will be lessened.
Lament
Part of speech: noun
Definition: An expression of grief, suffering, or sadness.A song expressing grief.
Part of speech: verb
Definition: To express grief.To bewail.
Example sentence: One of the rules of Greek lament poetry is that it mustn't mention the dead by name in case of invoking a ghost. Maybe the 'Iliad,' crowded with names, is more than a poem. Maybe it's a dangerous piece of the brightness of both this world and the next.