<p>I use both interchangeably. It depends on what comes out my mouth at the moment. </p>
<p>Live for today, plan for tomorrow.</p>
<p>Book bag? Sounds like something my Grandma would say.
Backpack is the way to go.</p>
<p>Backpack. I used to say book bag (I’ve lived in many different places, lol), but now it just sounds… weird.</p>
<p>Neither. Me and most of my friends say schoolbag…</p>
<p>I normally say backpack, just because everyone at every school I’ve ever been to says that, but sometimes I refer to it as just a “bag”. Except I say “shoulder bag” if the bag rests at your side and there’s one only strap going over one shoulder. But that’s what they’re called anyways, so…</p>
<p>Book bag, but usually just say bag. I don’t really wear a backpack, just totes/shoulder bags.</p>
<p>Bookbag, even though its a backpack</p>
<p>Backpack! Its better for your back and can hold more!</p>
<p>^ So…a bookbag is bad for your back and holds less?</p>
<p>A backpack.</p>
<p>Rucksack. I’ve always called it that.</p>
<p>A backpack is a backpack. A tote is a tote. A bag is a catch-all versatile term. A book bag is a school bag belonging to a person who uses the term book bag, of which I am not one.</p>
<p>Backpack…</p>