to use / to employ / to have to / to eat or drink / expense or outlay / usefulness / hence / therefore
用
=
丨
+
月
:
Mnemonic symbol: a first aid kit. Can you see the cross on the container?
用
=
丨
+
月
:
Yu the Great hurt her leg when she slipped in the engine's bathroom. The moon helps her to splint her leg using the bathroom's first aid kit and a dinosaur bone.
户
=
丶
+
尸
:
Helga Horse (hu) is being attacked by a ghost (尸) with a big petal leaf (丶) on his head in the space station's bathroom (Ø4). She's fighting him off using a wooden swinging door (户).
戶
=
⺁
+
口
:
Helga Horse's (hu) family (戶) is visiting her in the space station's bathroom (Ø4). For dinner, Helga prepared a ton of bananas (⺁) and a mandarin (口) on top.