习俗
xísú · HSK 7
custom
🎎🧧 习俗 = 习 practice/habit + 俗 custom = the customs a community practices
习 is the same 习 as in 学习 (to study/practice); 俗 means common or customary. Together they name the shared habits a society repeats: its mores and traditions. Sounds like SEE-soo.
俗 — person radical 亻 + valley 谷
A semantic-phonetic compound: 亻 (person) gives the meaning and 谷 (gǔ/valley) suggests the sound. Originally referred to the customs and habits of common people living in the valleys, later extending to mean 'common,' 'vulgar,' or 'secular' as opposed to refined or religious.