7003
A novel , alternative multi-layer Moineau-based pump −easier to build , implement and clean– is also introduced to extrude a quantity of viscous material in vertical direction .
 build, extrude, material, vertical
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:
 build, extrude, material, vertical