The word that comes after

Find a five letter word that can be placed behind each of these words:

1) Boiling

2) Check

3) Pin

4) View

Try another one:

1) Bill

2) Card

3) Side

4) Skate

And the last one:

1) Fire

2) Rain

3) Sound

4) Water

Answer

The answer for the first group is

point

Second one:

board

Last one:

proof (not sure ...)