Champion
Part of speech: noun
Definition: Someone who has been winner in a contest. Someone who is chosen to represent a group of people in a contest.
Part of speech: verb
Definition: to promote, advocate, or act as a champion for
Part of speech: adjective
Definition: Acting as a champion; that has defeated all one's competitors. Excellent; beyond compare. (predicative)) (Ireland, colloquial) Excellent; superb; deserving of high praise.
Example sentence: Never stop, never give up, never stop giving yourself the self-confidence you need to be a champion.
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 makeThe person (or persons) who is (are) most excellent.
Example sentence: I do the very best I know how - the very best I can; and I mean to keep on doing so until the end.