相约
xiāng yuē · HSK 7
to agree
🤝📅 相 (mutual) + 约 (appointment) = to mutually agree on a meeting
约 by itself means to make an appointment or arrange; 相 adds the mutual sense, so two parties settle on a place and time together. Same 约 appears in 约会 (a date/appointment).
约 — silk radical 糹/纟 + ladle 勺
约 combines the silk radical 糹 with 勺 (ladle), which provides the sound. Originally it referred to binding or tying with silk cords, from which came the meanings 'to bind by agreement,' hence 'pact, appointment,' and later 'approximately' (a loose, tied-up estimate).