Maintain
Part of speech: verb
Definition: to keep up; to preserve to declare or affirm a point of view to be true
Example sentence: We must develop and maintain the capacity to forgive. He who is devoid of the power to forgive is devoid of the power to love. There is some good in the worst of us and some evil in the best of us. When we discover this, we are less prone to hate our enemies.
Preserve
Part of speech: noun
Definition: a sweet spread made of any of a variety of berriesa nature preserve
Part of speech: verb
Definition: To protect; to keep; to maintain the condition of.
Example sentence: Every creature is better alive than dead, men and moose and pine trees, and he who understands it aright will rather preserve its life than destroy it.