Rest is what is left over or that subsists of a whole. The notion is also used in mathematics, chemistry and in various games and sports, with different specific meanings.
For example: "At the end of lunch, the young man gathered the remains and gave them to the dogs" , "The singer's remains will be repatriated in the next few hours" , "A group of paleontologists discovered the remains of a large carnivorous dinosaur in the vicinity of the stream ” .
Leftovers can be leftovers from food. If a person prepares a ham and cheese sandwich but only eats a third of it, what they did not eat constitutes the remains of the sandwich in question.
The notion of remains or mortal remains refers to the corpse of a person or what remains of it: "His remains were veiled in Congress" , "Justice asked to exhume the remains of the victim to carry out new studies" , "I want my mortal remains are cremated and my ashes, thrown into the sea ” .
Although it is also possible to use the word remains to refer to the corpse of any species, both animal and plant, it is not so common, since for our cultures death is usually very difficult to accept, or to have associated a series of rituals and concepts that distance it from what it means from a biological point of view: a necessary stage of the life cycle.
This does not mean that death does not have deeper meanings for other animals than the mere "ceasing to live", but that the human being cannot know it through the observation so limited and loaded with prejudices that he makes of them, and therefore That is why he prefers to deny this possibility and treat them as basic entities and slaves of nature, who do no more than what their instinct and their genetic inheritance indicate; in other words, they teach us that a dead human being is a symbol, while a dead horse is a decaying mountain of flesh and bones.
It is known as fossil remains, on the other hand, the remains of organisms that lived in Prehistory. These remains tend to turn into rocks from their mineralization, a peculiarity that enables their survival over time. Thanks to the fossil remains, it is possible to know what dinosaurs were like, to cite one example.
The prehistoric remains of buildings, vessels, tools and sculptures, among other elements, are called archaeological remains. As with fossils, these remains allow us to generate knowledge about the past, both about social or political issues (how certain ancient civilizations organized their settlements, how they ate, what resources were available to the inhabitants on public roads) and of natural catastrophes that devastated entire cities.
One of the most impressive examples is that of the ancient city of Pompeii, belonging to the Roman Empire, where an eruption of Vesuvius left its inhabitants frozen , due to the pyroclastic flow, a mixture of trapped air, solid materials and hot gases that advances at ground level at speeds ranging from 10 to 200 kilometers per hour.