椅子
yǐzi · HSK 2
chair
🪑 椅 = wood 木 + 奇 (qí, phonetic); 子 is a noun suffix
椅 combines the wood radical 木 with 奇 (qí) as a phonetic clue, giving yǐ. 子 (zi) is a common noun suffix in Mandarin, like the -er in 'chair'. So 椅子 literally reads as wood-thing-suffix = chair.
子 — pictograph of a baby/child with arms out
子 began as a pictograph of a swaddled infant with a large head and outstretched arms, originally meaning 'baby' or 'child.' From there it broadened to 'son,' 'offspring,' and a respectful suffix for masters like 孔子 (Confucius). It also became one of the twelve earthly branches.