罗塞塔石碑

• 罒(net; mesh (variant form))RADICAL
• 夕(evening; dusk)PHONETIC

Spreading a net at dusk to catch birds is the original meaning of the character.

• 宀(roof; cover)ASSOCIATIVE
• 土(earth; soil; land)RADICAL

Stuffing earth under a roof to seal all the gaps is what blocks and fills means.

• 土(earth; soil; land)RADICAL
• 荅(small grass; herb (for sound))PHONETIC

A tower is built from earth and stone, with a sound close to the character for answer.

• 石(stone; rock)RADICAL
• 卑(low; base; inferior)PHONO-SEMANTIC

A stone tablet is a low flat slab of rock stood upright to carve commemorative inscriptions.