1404
Integrating mechanical functionality , eliminating assembly features and making it possible to create internal functionality ( like cooling channels ) , internal honeycomb style structures , new topological optimisation structure etc .
 concept or principle: mechanical functionality; manufacturing process: assembly; machine or equipment: cooling channels; concept or principle: honeycomb; engineering feature: topological optimisation; concept or principle: structure
Please list all entity words in the text that fit the category.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} 
Answer:
 concept or principle: mechanical functionality; manufacturing process: assembly; machine or equipment: cooling channels; concept or principle: honeycomb; engineering feature: topological optimisation; concept or principle: structure