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Material extrusion additive manufacturing ( MEAM ) , also known as three-dimensional ( 3D ) printing , is a popular additive manufacturing technique suitable for producing 3D shapes using thermoplastic materials .
 manufacturing process: Material extrusion additive manufacturing; material: as; concept or principle: 3D; manufacturing process: additive manufacturing; concept or principle: 3D; material: thermoplastic materials
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: Material extrusion additive manufacturing, as, 3D, additive manufacturing, 3D, thermoplastic materials 
Answer:
 manufacturing process: Material extrusion additive manufacturing; material: as; concept or principle: 3D; manufacturing process: additive manufacturing; concept or principle: 3D; material: thermoplastic materials