若い

1. Origins, structure, and basic meaning

• Structure: 若い is an i-adjective read わかい, meaning young or at an early stage of growth for a person, plant, or other living thing.
• Basic usage: It applies not only to people but also to growing things such as trees; use 若いうちに for doing something during the period of being young.
  • あの木はまだ若いが、枝がよく伸びている。 says that the tree is still young but its branches are growing well; 若いうちに多くの場所を訪れたい。 expresses a wish to visit many places while young.

2. Common pitfalls and similar expressions

• 木はまだ若い
  • 若い can describe an early growth stage in a tree as well as a person's age.
• 若いうちに
  • うちに places the intended action within the period while the young state continues.
• 若い and 幼い
  • 若い broadly means young, while 幼い focuses mainly on childhood or immaturity.