suffering(苦)

The upper radical signifies ‘plants’ or ‘leaves,’ while the lower component depicts a mouth stimulated by a harsh taste, meaning ‘bitter.’ Consequently, the kanji represents ‘bitterness’ and, by extension, ‘suffering.’ As the old proverb goes, ‘Pain is inevitable, suffering is optional.

strong(強)

In the same way, you can find a bow on the left side of this figure, which symbolizes immense strength. On the right, there is an element resembling an insect. Since insects were also seen as symbols of incredible resilience in ancient times, this character perfectly combines these ideas to mean ‘strong, tough, and mighty’.