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Additively manufactured ( AM ) biodegradable metals with topologically ordered porous structures hold unprecedented promise as potential bone substitutes .
 manufacturing process: Additively manufactured; manufacturing process: AM; material: biodegradable metals; concept or principle: topologically; machanical property: porous; material: as; biomedical: bone
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: Additively manufactured, AM, biodegradable metals, topologically, porous, as, bone 
Answer:
 manufacturing process: Additively manufactured; manufacturing process: AM; material: biodegradable metals; concept or principle: topologically; machanical property: porous; material: as; biomedical: bone