metallurgy is your answer
The "study of metals and the process of refining (them)...."
Note that it says metal. Metallurgy has the word "Metal" in it, and so is most likely your answer (and is your answer).
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Knights vs samurai
Here are the differences between knights and samurai
similarities
-They both had swords
-Both had a code of chivalry
-Fought with honor of their country
-Both wore armour
-They both rode horses in battle
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differences
-The swords were different. eg. Katana
-Knights had metal armour covering every inch of their body
-Samurai carried two swords, a katana and a shorter blade(used for seppuku)
-Samurai commited seppuku if their daimyo died or if they lost a battle. They did this to die in honor
-Samurai wore more leather than steel
-Weapons were different
-Samurai looked more scary
-Samurais had muskets. This wasn't untill the late medieval times.
-Different religions. ie. Zen Buddhism for Japan and Christian/Catholic for Europe
Yes you it should because he wrote honestly if it was to a friend
