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The CIRP keynote paper by Thompson focused on DfAM and disclosed the width and complexity of the DfAM theme , and addressed many of the themes that should be considered as part of product development for AM .
 concept or principle: complexity; material: be; material: as; concept or principle: product development; manufacturing process: AM
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:
 concept or principle: complexity; material: be; material: as; concept or principle: product development; manufacturing process: AM