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The properties of the fabricated material are assessed using optical microstructure analysis , hardness testing , tensile testing , X-ray diffraction phase characterization and electron dispersive spectrometry .
 concept or principle: properties; concept or principle: fabricated; process characterization: optical; concept or principle: microstructure; machanical property: hardness; process characterization: tensile testing; process characterization: X-ray diffraction; concept or principle: phase
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: properties, fabricated, optical, microstructure, hardness, tensile testing, X-ray diffraction, phase 
Answer:
 concept or principle: properties; concept or principle: fabricated; process characterization: optical; concept or principle: microstructure; machanical property: hardness; process characterization: tensile testing; process characterization: X-ray diffraction; concept or principle: phase