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In this paper we study a new design of constrained surface with radial groove texture that significantly influences the effectiveness of reduction of the separation force and hence the manufacturing capability via theoretical modeling .
 engineering feature: design; concept or principle: surface; engineering feature: texture; concept or principle: effectiveness; concept or principle: reduction; concept or principle: separation force; manufacturing process: manufacturing; concept or principle: theoretical; enabling technology: modeling
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: design, surface, texture, effectiveness, reduction, separation force, manufacturing, theoretical, modeling 
Answer:
 engineering feature: design; concept or principle: surface; engineering feature: texture; concept or principle: effectiveness; concept or principle: reduction; concept or principle: separation force; manufacturing process: manufacturing; concept or principle: theoretical; enabling technology: modeling