wind
凮 centers on wind: moving air, breeze, or the wind as a natural force.
凮 is a variant form of 風 (wind). The outer enclosure ⺇ is a simplified wind frame, and the inner 百 likely replaced the original insect-like component in some historical simplifications.
The outer shape ⺇ suggests a wind enclosure, and inside is 百 (one hundred). Picture a hundred gusts of wind swirling inside a wind frame: 凮 is wind.
For フウ, imagine the wind blowing through a bamboo flute: the sound 'foo' (like blowing) cues フウ, and the wind rushes through the hundred openings.