angling, fish, catch, allure, ensnare
釣 centers on using bait or a lure to draw something in: angling for fish, catching, or metaphorically alluring and ensnaring someone.
釣 combines 金 (metal) with 勺, which likely contributes the sound. The character originally referred to a metal fishhook used for angling.
The left side is metal 金, and the right side 勺 looks like a hook with bait. Picture a metal fishhook dangling in the water to lure and catch fish.
For チョウ, imagine a long-serving chief named Chou who loves angling: Chou -> チョウ, and he always catches the biggest fish.
fishing; angling
to fish; to angle; to catch
change (for a purchase)
balance; equilibrium
fishing
fishing gear; fishing tackle
fishing spot; fishing hole
fishing with a pole
catch (fishing); amount of fish caught; caught fish
fish hook
fishing rod
fish pond (artificially stocked); fishing pond
to balance; to be in harmony; to be in equilibrium
to land (a fish); to catch; to reel in
fishing boat
change (for a purchase)
fishing line
temple bell; hanging bell; funeral bell
fishing; angling
big catch (of fish); big haul