684
It is known that the microstructures of aB-built materials by AM are very different from those by traditional casting or forging approaches .
 material: microstructures; concept or principle: materials; manufacturing process: AM; manufacturing process: casting; manufacturing process: forging
Please list all entity words in the text that fit the category.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} 
Answer:
 material: microstructures; concept or principle: materials; manufacturing process: AM; manufacturing process: casting; manufacturing process: forging