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Although fusion and solid-state joining techniques have been typically used to join dissimilar metals , additive manufacturing ( AM ) has the potential to produce MM parts with a complex spatial distribution of materials and properties that is otherwise unachievable .
 concept or principle: fusion; concept or principle: solid-state; manufacturing process: joining; material: metals; manufacturing process: additive manufacturing; manufacturing process: AM; manufacturing process: MM; process characterization: spatial distribution; concept or principle: materials; concept or principle: properties
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: fusion, solid-state, joining, metals, additive manufacturing, AM, MM, spatial distribution, materials, properties 
Answer:
 concept or principle: fusion; concept or principle: solid-state; manufacturing process: joining; material: metals; manufacturing process: additive manufacturing; manufacturing process: AM; manufacturing process: MM; process characterization: spatial distribution; concept or principle: materials; concept or principle: properties