834
Two approaches were used : the direct deposition of GRCop-84 on Inconel 718 and the compositional gradation of the two alloys .
 concept or principle: deposition; material: Inconel 718; material: alloys
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: deposition, Inconel 718, alloys 
Answer:
 concept or principle: deposition; material: Inconel 718; material: alloys