The kanji 証 generally conveys the meaning of "evidence," "proof," "testimony," or "to verify." It implies something that serves to confirm the truth or existence of something else. It can also refer to a certificate or a document that provides confirmation. The core idea revolves around establishing certainty or providing a basis for belief.

・On-yomi (音読み): ショウ ・Kun-yomi (訓読み): あかし

⚫︎証明書（しょうめいしょ） Translation: Certificate; document of proof. ⚫︎証拠（しょうこ） Translation: Evidence; proof. ⚫︎証言（しょうげん） Translation: Testimony; statement.

The kanji 証 is a phono-semantic compound (形声文字). It combines the radical 言（ことば、げん） meaning "word" or "speech" with the phonetic component 正（せい、ただしい）, which provides the sound and contributes the meaning of "correct" or "true". The combination suggests that the word or statement is true or correct, hence serving as evidence or proof. The development of the character reflects the importance of spoken or written words in providing validation and confirmation.