stuff
(a group of things that belong to a particular person or activity or in a particular place)
- I put all my stuff in the suitcase.
- Where’s your gym stuff.
(to fill a space or container with something)
- She stuffed her clothes into a bag.
- I found a bag stuffed with money.
- They stuffed the pillows with feathers.
staff
(a group of people who work for an organization)
- The hospital staff had to work in shifts.
- Our department has a staff of four.