The word 文字 is formed by combining two related characters: 文, which originally depicted the pattern of interlocking lines in a tattoo or crack, evolving to mean "writing" or "culture", and 字, which depicts a child under a roof, conveying the idea of "to nurture" and later "a written character" born from the primary system. Together, they create a composite concept where 文 represents the broader system or script, and 字 represents the individual, nurtured units (characters) within it, thus encompassing the entire idea of written language.