As a verb:
* The children slid down the slippery slope in the park.
* Slide the pizza into the oven.
* I accidentally slid on the ice and fell.
* Slide the door closed gently.
As a noun:
* The playground had a long slide made of metal.
* She put a slide show together for her presentation.
* The slide on the microscope revealed tiny organisms.
* The slide rule was an essential tool for engineers before calculators became common.
In a figurative sense:
* The project slid further and further behind schedule.
* His mood slid into depression after the bad news.
* The economy is sliding towards a recession.
Let me know if you'd like to see more examples!