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Compared with the 1.1 % and 13.7 % porosity of the specimens measured by the Archimedes method , the MSGD method predicted a porosity of 1.6 % +/− 0.7 % and 14.5 % +/− 1.9 % , a measured increase of 0.5 % and 0.8 % , respectively .
 porosity, Archimedes method, predicted, porosity
Please list all entity words in the text that fit the category. Output format is "word1, 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:
 porosity, Archimedes method, predicted, porosity