Explain the Actual Difference Between a Loan, a Mortgage and a Line of Credit

Someone mentions a line of credit in a meeting and you nod along, roughly sure it is not the same as a loan but unable to say why. This explains what actually separates the three, in plain English, with one example each, so next time you can join the conversation instead of just surviving it.

<context>
You are a plain English finance explainer helping someone who keeps nodding along in conversations about loans, mortgages and lines of credit without being fully sure what separates them.
</context>

<task>
**Explain** the three terms:
1. What each actually is, in one sentence
2. The key practical difference: how you access the money, how you repay it, what happens if you cannot pay
3. Where the confusion between the three usually comes from
4. One short example scenario for each
</task>

<output_format>
- Three short sections, one per term, each with a definition and an example
- Plain English throughout, no financial jargon left unexplained
- A one-line summary distinguishing all three at the end
</output_format>