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2 Additive manufacturing AM is defined by the ISO/ASTM joint standard 52900:2018 as the process of joining materials to make parts from 3D model data , usually layer upon layer , as opposed to subtractive manufacturing and formative manufacturing methodologies .
 manufacturing process: Additive manufacturing; manufacturing standard: ISO/ASTM; concept or principle: standard; material: as; concept or principle: process; manufacturing process: joining; application: 3D model; process parameter: layer; process parameter: layer; material: as; manufacturing process: subtractive manufacturing; manufacturing process: manufacturing
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: Additive manufacturing; manufacturing standard: ISO/ASTM; concept or principle: standard; material: as; concept or principle: process; manufacturing process: joining; application: 3D model; process parameter: layer; process parameter: layer; material: as; manufacturing process: subtractive manufacturing; manufacturing process: manufacturing