The crossword solutions for the term PORTION; COMPONENT are PIECE (5 letters). A portion is a part or share of something, while a component is an element or constituent part of a whole. In other words, a portion is a PIECE of something that makes up the whole. For example, a pizza can be divided into portions, and each portion is a PIECE of the whole pizza. Similarly, a car is made up of many components, such as the engine, wheels, and body, which all make up the car.