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Like with the previous classification , there are overlaps or grey areas , around where exactly surface finish fits for example .
 concept or principle: classification; process parameter: areas; engineering feature: surface finish; concept or principle: fits
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:
 concept or principle: classification; process parameter: areas; engineering feature: surface finish; concept or principle: fits