80
For example , the reliability of the process , surface finishing of the samples and materials density are among the major concerns .
 process characterization: reliability; concept or principle: process; manufacturing process: surface finishing; concept or principle: samples; concept or principle: materials; machanical property: density
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:
 process characterization: reliability; concept or principle: process; manufacturing process: surface finishing; concept or principle: samples; concept or principle: materials; machanical property: density