Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

Does a nvme gen 4 work in a gen 3 slot? : rbuildapc gen 4 ssd in gen 3 slot Gen 4 SSDs aren't worth it unless you're working with large files and doing a lot of sequential readwrites genie jackpots slot Rocket 4 ssds are fast, but still not fast enough yet to max out a PCIE Gen4 M2 slot yet Samsung 980 PRO and a couple others similar to it

genies touch slot I'm trying my first build and I bought a samsung 980 PCIe NVMe SSD which is a PCIe Gen x4, NVMe interface