Every collection is always part someone's hoard, and the hoard may provide for many such collections. What distinguishes a collection is that it is a subset of the whole which you have selected to tell a story. That story can be just about anything, but the context is usually clear and focused, such as a display of Grampa's knives, or a Randall made knives, or US knives of WWII.
I enjoy collections and collectors, they tend to be interesting people of drive and passion. I frequent a lot of garage sales and most of the time you run into tables covered by tableau of random stuff sold by the big box stores over the last 5 years. You get use to looking at it and it is all the same meaningless junk bought for some inane purpose and just as quickly discarded, just a soulless accumulation of everyday items. The collectors are different. Even if you have no interest in the actual items, there is always a story there and that story provides someone's perspective on our world. As such the collections always complement each other, they are each small windows on our own history and culture, and they should be appreciated as such.
n2s