Freight comes in various forms. It can be something that is not heavy, but is simply too large to ship through the typical carriers like UPS or FedEx. For instance, a light-weight kayak may not be too heavy to ship ground FedEx or UPS, but it is too large. It can also be something that is not too large, but is too heavy, like a car engine (or anything that weighs over 150 lbs). If you are moving, and therefore shipping all of your personal items, they often can be shipped either way, so you would want to get a quote for both freight AND regular carriers. In a case like that, you will still need to have it all packaged to get accurate quotes.
Sometimes, it simply isn’t worth shipping. For instance, don’t ship a couch if you can just sell it and buy another one you will be just as satisfied with when you move. Unless it’s a very nice and expensive couch, the cost to ship often is higher than the cost of the item itself. While we understand that some items have sentimental value, you should factor in hassle and costs when deciding if you should keep it or leave it (or sell it and re-buy another one at the new location).