8382
The application space for three-dimensional ( 3D ) printing , such as fused filament fabrication ( FFF ) , has grown significantly through the use of high-performance composite materials .
 three-dimensional, 3D, as, filament, fabrication, FFF, composite materials
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:
 three-dimensional, 3D, as, filament, fabrication, FFF, composite materials