1671
AM has grown tremendously in recent years , with improvements in technology and resulting material properties sometimes exceeding those of equivalent parts produced by traditional production processes .
 manufacturing process: AM; concept or principle: technology; concept or principle: material properties; manufacturing process: production; concept or principle: processes
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:
 manufacturing process: AM; concept or principle: technology; concept or principle: material properties; manufacturing process: production; concept or principle: processes