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This study investigates the mechanical and corrosion properties of aB-built and annealed equiatomic CoCrFeMnNi alloy produced by laser-based directed energy deposition ( DED ) Additive Manufacturing ( AM ) .
 concept or principle: investigates; application: mechanical; machanical property: corrosion properties; material: alloy; manufacturing process: directed energy deposition; manufacturing process: DED; manufacturing process: Additive Manufacturing; manufacturing process: AM
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: investigates, mechanical, corrosion properties, alloy, directed energy deposition, DED, Additive Manufacturing, AM 
Answer:
 concept or principle: investigates; application: mechanical; machanical property: corrosion properties; material: alloy; manufacturing process: directed energy deposition; manufacturing process: DED; manufacturing process: Additive Manufacturing; manufacturing process: AM