相 (xiāng) — surname Xiāng

At HSK 7 this entry teaches the standalone noun meaning 'surname Xiang' (e.g. 相先生). Other senses — 'mutual' (互相), 'looks' (相貌), 'phase' (physics) — are separate words written the same way but learned elsewhere.

Two or more meaningful parts placed together so that their meanings combine into a new one.

In 相, 目 is an eye and 木 is a tree, showing an eye looking at a tree; this originally meant “to observe.”