Difference among point / item / piece / unit when we are talking about quantity
Is there any difference among point / item / piece / unit?
1. We have 12 POINTS in our Minutes of the Meeting with the Client, and our company is the responsible party in each of them. Or ITEMS?
2. We have installed 2 ITEMS of equipment (2 pumps). But if we check the planned / actual values, we see that we are not on track: planned 12 items, installed only 2, so we have minus 10 items. Or PIECES?
3. Piles have been delivered in the amount of 100 pieces. ITEMS?
Can we use UNITS in a similar case?