Improve
Part of speech: verb
Definition: to make (something) better; to increase the value or productivity (of something) to become better
Example sentence: Help others and give something back. I guarantee you will discover that while public service improves the lives and the world around you, its greatest reward is the enrichment and new meaning it will bring your own life.
Better
Part of speech: adjective
Definition: Greater in amount or quantity
Part of speech: adverb
Definition: (manner) Accurately, competently, satisfactorily.
Part of speech: verb
Definition: To improve.
Part of speech: noun
Definition: An entity, usually animate, deemed superior to another.An entity, usually animate, deemed superior to another; one who has a claim to precedence; a superior.
Example sentence: It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.