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In Sections 4the DfAM framework will be discussed in more detail ; lightweighting , internal topology , surface topolgy , material complexity and part integration .
 concept or principle: framework; material: be; machanical property: lightweighting; concept or principle: internal topology; concept or principle: surface; material: material; concept or principle: complexity
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: framework; material: be; machanical property: lightweighting; concept or principle: internal topology; concept or principle: surface; material: material; concept or principle: complexity