work vs job
The difference between a job and work (countable/uncountable).
trouble vs problem
The main difference between a problem and trouble is countable/uncountable.
on the contrary vs in contrast
Avoid using ‘on the contrary’ as a linking word – it is only used in very specific circumstances.
according to
How to use ‘according to’.
The situation deteriorated.
How to use ‘deteriorated’ (meaning ‘got worse’).