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In this work , rapid prototyping and physical modelling are used to evaluate four different extruder and deposition concepts for the Hybrid Metal Extrusion & Bonding ( HYB ) additive manufacturing ( AM ) process for aluminium alloys .
 enabling technology: rapid prototyping; enabling technology: modelling; machine or equipment: extruder; concept or principle: deposition; material: Metal; manufacturing process: Extrusion; concept or principle: Bonding; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: process; material: aluminium alloys
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:
 enabling technology: rapid prototyping; enabling technology: modelling; machine or equipment: extruder; concept or principle: deposition; material: Metal; manufacturing process: Extrusion; concept or principle: Bonding; manufacturing process: additive manufacturing; manufacturing process: AM; concept or principle: process; material: aluminium alloys