Injection moulding is a widely used process in manufacturing where molten plastic is injected into a mould cavity. Some synonyms for injection moulding include plastic injection moulding, injection molding, and plastic moulding. Other synonyms that are closely related include blow moulding, which is used to create hollow plastic parts, and extrusion, which involves forcing material through a die to create a specific shape. Compression moulding is another manufacturing process that involves placing a heated material into a mould and applying pressure to create a specific shape. Overall, there are several synonyms for injection moulding that are used interchangeably in the manufacturing industry.