The Book of Job is the book of arguments. The Book of Job is the only book in which the word "arguments" is found in the KJV. Job is the only book in the Bible in which the word "arguing" is found. Job and his three friends presented their arguments but each one had something wrong with their arguments and the Lord rebuked all four in the end.
Elihu presented his arguments also and he was right in every respect. The Lord did not rebuke Elihu in the end. One main difference between the arguments Job and his three friends made and the points Elihu made was the fact that Elihu did not insist what he was saying was right and everyone else was wrong, even though he was right when everyone else was wrong. Instead, Elihu called his views his "opinions," giving respect to the others to prove him wrong with their "opinions." The single word "opinion" is only found 3 times in the KJV and Elihu is the one who used the word all three times.