(So We brought down), but in the second: (So We sent down), and what is the difference between them?

Why does the Almighty say in the first verse: (So We brought down), but in the second: (So We sent down), and what is the difference between them? And the Almighty said in the first verse: (disobeying), but in the second: (oppressing), what is the difference between them?

This believer feels intense constriction

So the believer for whom this world becomes a prison, constricted and of limitless pain,
and it does not end except by exiting it through death; is the believer who ascends
during his prayers to the seven skies.