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This paper reports our research in the area of postprocessing of interior surfaces of an AM component .
 concept or principle: research; process parameter: area; concept or principle: postprocessing; concept or principle: surfaces; manufacturing process: AM
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: research, area, postprocessing, surfaces, AM 
Answer:
 concept or principle: research; process parameter: area; concept or principle: postprocessing; concept or principle: surfaces; manufacturing process: AM