Maybe. Depends on what you do everyday.
If memory serves that would be the 105 job change Sword Master.
Sir Lancelot would usually use a sword.
The best fencing weapon would usually be the sword.
the best range weapon would be skorms bow, the sword with the highest damage would be the solus greatsword, but the best sword would be either avo's tear if your good, or sword of Aeons if your evil (they both have equal stats), due to them high damage and being lighter fast weapons as oppose to the slow heavy solus greatsword.
Yes you can make a sword out of silver and it would be totally useless as a weapon. You could admire it as an ornament, but silver is a very soft metal and it would have no other purpose than decorative.
That would depend on various things: Effective against what?; and used by whom? ; how will they use the weapon?; do they fully understand how to use it?
The primary {or staple} weapons of choice were: Sword, Mace, Polearm {Lance, Halber, Battle Ax etc}
The largest diamond ever found fits into the palm of a grown man's hands. That is not large enough to fabricate a sword of any substance. A sword useful as a weapon would be more useful made from metal. A sword made from diamonds could only be symbolic, because it would be so tiny.
a polearm ============================= There are several types of polearms. The closest European weapon to a "sword spear" would be a glaive. In Asian weapons, there is a nagamaki, the naginata, and the Kwan Dao.
Link can stop time, then either throw a bomb at frozen Master Chief, or use his sword to cut Master Chief's head off.
Every Norse warrior who had a choice would choose a Sword, swords were expensive and a sign of status, if you had a sword people knew you were someone important. But the common Viking would have to let an Axe or a Spear do.
To tell the truth, a modern day ninja would actually walk with a kunai knife on their front. Its a good weapon. Trust me. Ps.walk with a sword too. {im a ninja}