Why are guns considered the only "Arms" in relation to the second amendment?

Firearms are NOT considered the only "Arms" in relation to the second amendment, but they are the arms that are being attack by the gun control lobby. When did you ever hear about the knife, sword, hammer, or baseball bat control lobby?

Here is what one of founding fathers had to say about arms:

The peoples swords, and every other terrible instrument of the soldier, are the birth-right of an American. … The unlimited power of the sword is not in the hands of either the federal or state governments, but, where I trust in God it will ever remain, in the hands of the people.” -Tench Coxe Feb. 20, 1788

Nobody in this country is doing much to restrict bladed weapons, so there's little need to object to restrictions. And swordplay has become somewhat passe.

Because you don't need to pass background checks and such to buy knives.

Firearm are arms.

Knives aren't arms.

It's because you can't kill 20 people in a school or theater with a knife.

Because arms Is a short word for fire arms.