collide, brunt, highway, opposition (astronomy), thrust, pierce, stab, prick
衝 centers on forceful, direct impact: colliding, thrusting, piercing, or stabbing. The highway and astronomical opposition senses extend this idea of a direct line of movement or alignment.
衝 combines 行 (to go, movement) with 重 (heavy, weight), suggesting a heavy, forceful movement or collision. The exact historical development is uncertain, but the phono-semantic structure is plausible.
The outer 行 suggests movement, and the inner 重 is something heavy. Picture a heavy cart rolling down a highway and colliding with a wall, piercing it with a thrust.
For ショウ, imagine a heavy cart crashing and making a loud 'show' of sparks: show -> ショウ, as the impact thrusts forward.
impact; shock; impulse
collision; crash; impact; running into
impulse; urge; impetus
shock absorption; buffer action; cushioning; buffer
shock wave
negotiation
important point; strategic position; key point
important point (e.g. on a route)
partitioning screen
carrier sense multiple access with collision avoidance network; CSMA; CA network
carrier sense multiple access with collision detection network; CSMA; CD network
Charpy impact test
head crash
focus of the trade routes of the world
double collision
stabbing; stimulation
dynamic buffering
simple buffering
Atomic Collision Research in Japan
Large Hadron Collider; LHC