NAND is the flash memory in any SSD. There are several types of such NAND flash chips, like SLC, MLC, TLC, QLC. Most common is TLC or a mix of SLC and QLC. QLC is the slowest.
NVME is a PCIe connection,
SATA is SATA
Your motherboard´s specification:
AMD® B450 Chipset
- 1 x M.2 slots (M2_2, Key M)
- Supports PCIe 2.0 x4 2242/ 2260 /2280 storage devices (NVME)
AMD® CPU
- 1x M.2 slot (M2_1, Key M)
- Supports PCIe 3.0 x4 (1st, 2nd and 3rd Gen AMD Ryzen™/ Ryzen™ with Radeon™ Vega Graphics and 2nd Gen AMD Ryzen™ with Radeon™ Graphics) or PCIe 3.0 x2 (AMD® Athlon™ with Radeon™ Vega Graphics)and SATA 6Gb/s 2242/ 2260 /2280 storage devices
- PCI_E4 slot will be unavailable when an M.2 SSD is installed in the M2_2 slot.