The sword was a sidearm. It was a trusty companion you had on you everyday to demonstrate your wealth and power and to be drawn in your defense if need be.

When it was time for battle, your sword would still be at your side, but in your hands would be some sort of polearm or perhaps an axe.

Also, commonly used but often forgotten about is a falchion. It was a sidearm that looked like a sword but did not require all the training in swordsmanship to be effective. Instead of being balanced like a sword to enhance the point control, a falchion was point heavy (like a machete) and swung like a hatchet.