six expressions

[peppy_man]

What do the following expressions mean?

1)cafe-hoppers

2)hotel-hoppers

3)spending freeze started to thaw.

4)moral vacuum OR moral decline OR moral deterioration

5)pension size

6)They don't work up to their talent.

I have my own prediction, but I'd like native teachers' intuition to check them.

[Tdol]

1/2 A hopper is someone who goes from place to place
3 Spending freeze= temporary stop- thaw means they're starting to spend again
4 moral vacuum- no moral considerations- decline/deterioration means that morals are not as good as they were.
5 pension size- how much you are paid
6 they don't fulfill their potential

[peppy_man]

tdol, thank you. I have three questions.

5 pension size- how much you are paid

I'd like to know how to use 'pension size'.
For example, when elderly people can get less money than those could get before, pension size is shrinking / going down / decreasing / getting low / lowering .
Is there any problem among the above five expressions?

6 they don't fulfill their potential

Can this be replaced with 'they don't make full use of their potential'?
Also the opposite meaning of this is 'they work beyond their ability'.
Is this correct?

Thank you in advance.

[Tdol]

5- I'd use 'shrinking'
6- It's 'don't make full use...' Theoretically you could work beying your ability, but it is not an expression that is much used. You can be promoted beyond your ability.

[peppy_man]

tdol, thank you.
I have three questions.

>5- I'd use 'shrinking'

'The pension size is shrinking' means 'they will get less pension'.
Is 'they will get less pension' acceptable?

>6- It's 'don't make full use...'

Is 'they don't make full use of their potential' wrong?

>You can be promoted beyond your ability.

I guess this expression means 'you're required to perform beyond your ability'.

Does 'perform beyond your ability' have any problem?