Ternary and binary ER relationships
<p>I'm having trouble understanding the difference between a ternary relationship like this :</p>

<p><a href="https://i.stack.imgur.com/dPPDU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dPPDU.png" alt="enter image description here"></a></p>

<p>and multiple binary relationships like this (if that's right) : 
<a href="https://i.stack.imgur.com/pfitG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/pfitG.png" alt="enter image description here"></a></p>

<p>From what I've been reading I think it has to do something with constraints? If someone can explain the difference to me clearly I would greatly appreciate it.</p>