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

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

• 瓦(tile; brick (depicting form))

The character 瓦 pictures tiles stacked on top of each other on a roof.

• 禾(rice plant)
• 斗(threshing floor; rice threshing area)

To classify rice grain by measuring each type with a measuring vessel.

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

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

• 瓦(tile; brick (depicting form))

The character 瓦 pictures tiles stacked on top of each other on a roof.

• 禾(rice plant)
• 斗(threshing floor; rice threshing area)

To classify rice grain by measuring each type with a measuring vessel.