项
xiàng · HSK 4
neck
项 = 工 (work) + 页 (page); a measure word for items or categories
项 originally meant nape of the neck, then extended to mean item or category. Now used as a measure word for items, tasks, or projects (e.g. 一项工作 = one task).
项 — 工 (gōng, phonetic) + 頁/页 (head)
项 originally meant the nape or back of the neck, with 頁 (head) giving the meaning and 工 supplying the sound. Over time it broadened to mean 'item' or 'category,' as in 项目 (project/item), while the original neck sense survives in compounds like 颈项.