Component (a building block) — not the same thing as a radical or a sound component. · 4strokes
休呆困宋床未末本
Kangxi radical no.75 · 4strokes — The 214 Kangxi radicals
Filed under it in a dictionary. That is a lookup convention — it does not mean it is the only part the character is built from.
木未末本术朱朴朵