副 is built from the 畐 (full jar (in 福·副)) and 刂 (knife (right)) components.
It belongs to a phonetic family with 福 and 幅 — they share the 畐 component and the reading フク.
A common word using 副 is 副～ (ふく～), meaning “vice ~”.
Don't confuse it with 福, 幅, and 富.
