The kanji 呼 primarily represents the concept of "to call," "to summon," "to invite," or "to exclaim." It implies using one's voice to attract attention, give a command, or express something. It involves the act of vocalizing to initiate a response or interaction.

・On-yomi (音読み): コ (ko) ・Kun-yomi (訓読み): よ（ぶ） (yo(bu))

⚫︎ 呼ぶ Translation: To call; to summon. ⚫︎ 呼出 (よびだ) す Translation: To call out; to page. ⚫︎ 呼吸 (こきゅう) Translation: Breathing; respiration.

The kanji 呼 is a phono-semantic compound (形声文字, けいせいもじ). The phonetic component is 乎 (ko), which indicates the sound. The semantic component is 口 (kuchi), meaning "mouth." Thus, the character combines the idea of sound with the mouth, implying the act of using one's mouth to call out or speak. This formation is a visual representation of the action of using the voice.