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Wire and arc additive manufacturing ( WAAM ) is an additive manufacturing ( AM ) technology that uses wire-form materials and arc discharges as the energy source .
 manufacturing process: Wire and arc additive manufacturing; manufacturing process: WAAM; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: technology; concept or principle: materials; concept or principle: arc; material: as; application: source
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: Wire and arc additive manufacturing, WAAM, additive manufacturing, AM, technology, materials, arc, as, source 
Answer:
 manufacturing process: Wire and arc additive manufacturing; manufacturing process: WAAM; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: technology; concept or principle: materials; concept or principle: arc; material: as; application: source