Combined from 化 [化] + Mouth [口] + Tree / Wood [木] to compose 保: represents "guarantee".
guarantee, ensure, maintain, insure, secure
to guarantee, to warrant
to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep we
nursing, nurturing, rearing, lactation, suckling
retaining warmth, keeping heat in, heat insulation
charge, custody, safekeeping, deposit, storage
insurance, guarantee
care, protection, shelter, guardianship, favor, patronage
conservative, maintaining
guarantee, security, assurance, pledge, warranty
day care worker in a kindergarten nursery school etc.
health preservation, recuperation, recreation
health preservation, hygiene, sanitation
guarantee, security, assurance, pledge, warranty
preservation, conservation, storage, maintenance