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Particularly in higher cost technologies , such as metal powder bed fusion , component design requires extensive additive manufacturing ( AM ) knowledge .
 technologies, as, powder bed fusion, component, additive manufacturing, AM
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 technologies, as, powder bed fusion, component, additive manufacturing, AM