Programmable Logic Array (PLA) and FPGA. They are both very similar devices in concept, but what’s the difference between them? I think it must be mostly in terms of complexity and scale. Programmable Logic Arrays are designed to only replace a small handful of NAND gates on a circuit board, say 5 to 50, with a single chip. An FPGA by contrast is designed to have enough gates to implement a CPU, for example. To that end, an FPGA may also have built-in hardware instantiations of common circuits like couners, adders, memory, and so on. Indeed, this is the stated difference.
At the high-end of programmable logic arrays are complex programmable logic devices (CPLDs).
20191219/DuckDuckGo programmable logic array versus fpga
20191219/DuckDuckGo difference beween programmable logic array and fpga
20191219/http://www.differencebetween.net/technology/difference-between-cpld-and-fpga/
20191219/https://en.wikipedia.org/wiki/Programmable_logic_device