From biological taxonomy, a<unk> or regnum is a taxonomic rank in either (historically) the highest rank, or (in the new three-domain system) the rank below domain.  Each<unk> is divided into smaller groups called phyla (or in some contexts these are called "divisions"). Currently, textbooks from the United States use a system of six<unk>  (Animalia, Plantae, Fungi, Protoctista, Archaea, and Monera), while British and Australian textbooks describe five<unk>  (Animalia, Plantae, Fungi, Protista, and Prokaryota or Monera).
Carolus Linnaeus distinguished two<unk>  of living things: Animalia for animals and Vegetabilia for plants (Linnaeus also treated minerals, placing them in a third<unk>  Mineralia). Linnaeus divided each<unk> into classes, later grouped into phyla for animals and divisions for plants.
When single-celled organisms were first discovered, they were split between the two<unk> : mobile forms in the animal phylum Protozoa, and colored algae and bacteria in the plant division Thallophyta or Protophyta.  However, a number of forms were hard to place, or were placed in different<unk>  by different authors: for example, the mobile alga Euglena and the amoeba-like slime molds.  As a result, Ernst Haeckel suggested creating a third<unk> Protista for them.
Kingdom 
Nail 
Wonder 
Jaw
Hospital
Atom
Neck
Head 