The core meaning of the kanji character 掛掛 is to hang, suspend, or put something on something else. It implies a sense of attachment, either physically or metaphorically. This can range from literally hanging a picture on a wall to attaching a fee or burden to something. The concept revolves around the action of connecting or affixing something.

・On-yomi (音読み): ケイ (kei) ・Kun-yomi (訓読み): か（ける） (ka(keru))

⚫︎電話を掛ける Translation: To make a phone call ⚫︎壁に絵を掛ける Translation: To hang a picture on the wall ⚫︎費用が掛かる Translation: Expenses are incurred; It costs money

The kanji 掛掛 is a phono-semantic compound (形声文字). The phonetic part is 卦 (or a simplified form of it), indicating the sound ke. The semantic part, which provides the meaning, is related to the action of attaching or hanging something. The original meaning relates to "to hang," which then expanded to include concepts like "to put on," "to charge," and "to apply".