Best
Part of speech: adjective
Definition: Most; largest.
Part of speech: adverb
Definition: (manner) Accurately, competently, satisfactorily.
Part of speech: verb
Definition: To beat in a contest.
Part of speech: noun
Definition: The supreme effort one can make The person (or persons) who is (are) most excellent.
Example sentence: I am as bad as the worst, but, thank God, I am as good as the best.
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: All life is an experiment. The more experiments you make the better.