Readings & Meanings:
う (かぶ) to float, to come to mind
to float, to be left over
They threw a floatation ring to the person drowning in the ocean.
Osamu Dazai was sent many ups and downs in his life.
Boats use floatation devices to float.
Another obvoius one on the left: San-zui tells us that water (水) is involved. Apparently the 孚 on the right is for phonetics. 孚 has a pictograph of a hand above a child (子) and has the meaning of "encase, nourish".