旁路

Two registers: in engineering (electrical, plumbing, networking) it's a noun - 旁路电容 (bypass capacitor), 心脏旁路手术 (heart bypass surgery). In computer security and software, it's a verb - 旁路验证 (bypass verification). Compare with 绕过 (ràoguò, 'go around'), which is more general.

memory

Literally 'side road' (旁 'side' + 路 'road'). Same image whether you're routing a pipe around a clog or sneaking traffic around a firewall.