Permanent  : to be fix or unchanging  , The opposite of temporary.

He plans to stay there permanently .

He has decided to become a permanent resident of China  .

Once they established permanent  boundaries ,  they had to fight to defend their territory from invaders  .

Temporary  : Only lasting for a short time  ,The opposite of permanent  .

We can only offer him a temporary position in the company  .

This isn't the kind of job he wants,  but it's okay as something temporary,  Until he can find something better  .

Until we move into the new building  we will use this office as our temporary base  .

Definite  :Well defined , precise,  certain, unchanging  .

We can't begin the project until you give us a more definite schedule  .

we can't give you a definite answer until we get am more information  .

Until we have more definite information about your plans,  we cannot make any promises.

obvious: easy  to say,  stands out  .

of the job candidates we interviewed , He was the obvious choice  .

It's obvious that he can't afford to buy  that house  .

She's obviously in love with him , so we can't allow them to work in the same office  .

Trivial  : of little or no importance  , insignificant 

It's a trivial detail,  So there's no need to worry about it  .

Those problems are not trivial , so we need to find a solution  .

He thinks it's a trivial matter,  but I think it's going to cause a big problems if we ignore it  .

Permanent  : to be fixed or unchanging .

Obvious easy to see stands out 

Trivial the opposite of importance 

It's a trivial detail  ,  so there's no need to worry about it  .

Where can I give you a definite answer until we get the more information  .

This isn't the kind of job he wants  But it's okay as something temporary until he can find something better  .

He has decided to become a permanent resident of China  .

We can't make a reservation 

We can't make a reservation for your flight until you give us a definite return date  .

It was an obvious lie  but some people still believed it  .

Those problems are not trivial  so we need to find a solution  .

If you do well as the temporary worker, you may be hired  for a permanent position  .