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Wire feed metal additive manufacturing offers advantages , such as large build volumes and high build rates , over powder bed and blown powder techniques , but it has its own disadvantages , i.e. , lower feature resolution and bead morphology control issues .
 process parameter: feed; manufacturing process: additive manufacturing; material: as; process parameter: build volumes; process characterization: build rates; machine or equipment: powder bed; material: powder; engineering feature: feature; concept or principle: bead morphology
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: feed, additive manufacturing, as, build volumes, build rates, powder bed, powder, feature, bead morphology 
Answer:
 process parameter: feed; manufacturing process: additive manufacturing; material: as; process parameter: build volumes; process characterization: build rates; machine or equipment: powder bed; material: powder; engineering feature: feature; concept or principle: bead morphology