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While cellular materials do tend to have lower effective material stiffness and strength properties , this reduction is often acceptable and can be tailored to the application , as well as varied locally .
 material: cellular materials; process characterization: effective material stiffness; machanical property: strength properties; concept or principle: reduction; material: be; material: as; material: as
Please list all entity words in the text that fit the category.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} 
Answer:
 material: cellular materials; process characterization: effective material stiffness; machanical property: strength properties; concept or principle: reduction; material: be; material: as; material: as