2032
Generally , two design approaches , direct/indirect reproduction of natural topologies via reverse engineering and generic bio-inspiration using design rules or guidelines , are conducted in this domain .
 engineering feature: design; concept or principle: topologies; concept or principle: reverse engineering; concept or principle: bio-inspiration; concept or principle: design rules; concept or principle: domain
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:
 engineering feature: design; concept or principle: topologies; concept or principle: reverse engineering; concept or principle: bio-inspiration; concept or principle: design rules; concept or principle: domain