drum / CL:通[tong4],面[mian4] / to drum / to strike / to rouse / to bulge / to swell
鼓
=
壴
+
支
:
Gitta Giraffe (gu) is beating her drums in the space station (Ø3). She is beating an archaic drum (壴) and a modern snare drum (鼓) using a twig (支).
mountain / hill / anything that resembles a mountain / CL:座[zuo4] / bundled straw in which silkworms spin cocoons / gable
山
=
丨
+
凵
:
Mnemonic symbol: 山 looks like the tip of a fork. Sherlock Holmes (sh) is climbing a mountain (山) in front of the anthill (an1). He uses a dinosaur bone (〡) as walking stick, and to have better grip he attached a fork (山) to its tip. Unfortunately he accidentally sticks the fork into a receptacle (凵) on the ground of the mountain and gets shocked.