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Hot isostatic pressing ( HIP ) of additively manufactured metals is a widely adopted and effective method to improve the density and microstructure homogeneity within geometrically-complex metal structures fabricated with laser powder bed fusion ( LPBF ) .
 Hot isostatic pressing, HIP, additively manufactured, density, microstructure, geometrically-complex, fabricated, laser powder bed fusion, LPBF
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:
 Hot isostatic pressing, HIP, additively manufactured, density, microstructure, geometrically-complex, fabricated, laser powder bed fusion, LPBF