'Burden' in the Bible

For it seemed good to the Holy Ghost, and to us, to lay upon you no greater burden than these necessary things;

Now when we had discovered Cyprus, we left it on the left hand, and sailed into Syria, and landed at Tyre: for there the ship was to unlade her burden.

However, so that I will not burden you any further, I beg you in your graciousness to give us a brief hearing.