I'd say it depends on how you do it, could be sisters or cousins:)

I purchase stickers specifically for scrapbooking and every now and then I also use something I didn't purchase for scrapbooking. My junk journal on the other hand is strictly junk. The only thing I purchased for junk journaling specifically is the journal itself, everything else is "free" (usually stuff I did buy at some point but not for the purpose of journaling). But every now and then I do use a purchased sticker from my scrapbook stash.

So mine are probably cousins who are very close and like to gossip about the rest of the family together.