compare the materials below:
Gold - Iron
Silk - Cotton
Spices - Salt
brazilwood - wood
Respostas
Gold is stronger than Iron. Gold is nonmagnetic while Iron is magnetic. Compared to Iron, Gold is chemically inactive. Gold has more malleability and ductility than the Iron.
Cotton comes from plants while silk comes from insects. Price of cotton is usually cheaper than silk. Cotton has water retention proprerties so it can be used as tissue for towels.
Spices have different flavors, while salt has a salty taste. Spices come in different colors. Salt also comes in different colors depending from where it came (saline region of the world). Spices can also be used for coloring the food, while salt is just for seasoning.
Woods comes from different regions of the world and have diffent colors. While brazilwood has its origin in Brazil, specifically in the Atlantic forests. Due to the color of brazilwood a red dye can be made with its wood, while with others woods you can't made dye.