Learn English – Difference between “struggling for survival” and “struggling for life”

I have gone through both the links and could figure out the following meaning and difference.

1. Sit yourself at the table means - there is this table with a few chairs around it. So it only means to sit (on a chair at the table) to take some rest.

2. Set the table phrases is used for arranging the things needed for a meal on the table. 'Do you want me to set the table?' means 'Do you want me to arrange things for the meal on the table? - So the sentence in the e-book is 'Do not set yourself at the table to sit alone' means - you should wait for the other members to join you for a meal or have your meal with them and not alone. I have no idea about the story but i think it is related to etiquettes and manners. So this explanation fits.

If you happen to go in a hotel then what expression will the waiter use among the above two. He'll say --

Sit yourself at the table. Your order will be served there.

It does depend on the context, but let's imagine that a group of people are discussing a collision on the roads.

"I believe it could have been prevented."

To me, and I'm not sure if the implications vary between individuals, but the speaker is saying that something could have been done a while before the situation occurred. For example, it may have been avoided by:

• Safer road laws
• A lower speed limit
• Better brakes on cars

On the other hand, "avoided" implies that the actions taken to circumnavigate the incident would have been last minute, or unplanned.

• Braking
• Veering out of the way
• Honking the drivers' horns

Google defines the terms as:

Avoid: keep away from or stop oneself from doing (something).

Prevent: keep (something) from happening.

They could be used as synonyms, and are fairly interchangeable (although one usually feels more natural to speak.)