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Additive manufacturing ( AM ) has gone through major developments in the past decade , enabling the rapid manufacture of complex geometries from traditional engineering materials .
 manufacturing process: Additive manufacturing; manufacturing process: AM; concept or principle: manufacture; concept or principle: complex geometries; material: engineering materials
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: Additive manufacturing, AM, manufacture, complex geometries, engineering materials 
Answer:
 manufacturing process: Additive manufacturing; manufacturing process: AM; concept or principle: manufacture; concept or principle: complex geometries; material: engineering materials