Original text: 初心（しょしん）：最初に持っている気持ちや信念。最初に心に抱く気持ち。 Translated text: Shoshin: The initial feelings and beliefs one holds. The feelings first embraced in the heart.

First time hearing: Information or stories heard for the first time. Hearing something unknown for the first time.

Original text: 初志（しょし）：最初に持った志や決意。最初に抱いた志や目標。 Translated text: Original resolve (shoshi): the determination or goal first held.

Beginner: Basic stage or basic content. Basic parts that should be learned first.

Lava: Refers to the high-temperature rocks erupted from a volcano. It is solidified magma that reaches the earth's surface.

Dissolution: The process in which a solid dissolves in a liquid. The act of a substance dissolving.

Welding: A process of melting and joining metals and other materials by heating them. A technique of joining metals together by melting them.