请问刀和剑分别怎么翻译?

blade 刀
sword 剑
我一般是这样认为，其实都差不多

刀：a sword with a curving edge
剑：a double-edged straight sword

剑:sword
刀:blade

都是sword

都用sword把

刀: knife
Relative explainations:
<sword> <chiv> <falchion> <condiments> <seasonings> <tool> <katana> <cutlery> <shiv> <reamer>

Examples:
1. 他捡起了刀叉。
He picked up his knife and fork.
2. 他正在磨刀。
He is burnishing the knife.
3. 那把刀子被卡住了，她猛地一拔，把它拔了出来。
The knife was stuck but she pulled it out with a jerk.
4. 在英国，用刀把食物送进嘴里被认为是粗鲁的行为。
Putting food into one's mouth with a knife is considered vulgar in England.
5. 战士们把刀磨得锋利。
The soldiers sharpened up their knives.
6. 他用一把小刀把自己的名字刻在墙上。
He scratched his name on the wall with a knife.
7. 我拿起了那把刀，把它扔到了窗外。
I picked up the knife and threw it out of the window.
8. 他用一把刀子将苹果切开。
He cleaved an