4185
It was observed that , by changing the building direction from vertical to horizontal , columnar to equiaxed transition ( CET ) occurred in the alloy .
 building direction, vertical, transition, alloy
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:
 building direction, vertical, transition, alloy