All living creatures are made up of cells. In plants and animals, there are two major categories of cells: somatic cells and reproductive cells, known as germ cells or gametes. In humans and other animals, egg and sperm are reproductive cells.
All other cells in the body are somatic cells. Think of every body part you have; they are all made of somatic cells. The word 'somatic' is derived from the Greek word, 'soma', meaning body. You can think of soma as an abbreviation for 'so many'. This is because while germ cells include only egg and sperm, somatic cells encompass an enormous number of other types of cells.