organism

In a biological sense, the word conveys a complete, self-sustaining unit of life. It is more clinical and inclusive than "animal" or "plant," often used when referring to things that are barely visible (like bacteria) or structurally complex (like mammals). When used metaphorically, it suggests an organic, interdependent quality where various parts work together seamlessly for survival or operation. This implies a level of adaptability and internal coordination that a mere "machine" or "organization" lacks. It typically carries a neutral to positive connotation, emphasizing the miracle of life or the efficiency of a complex system.