judge:
(plural: ‘judges‘; pronunciation: the letters ‘dg’ rhyme with the first letter ‘j’ in this word; — for the right pronunciation, please click here)

a judge in a courtroom, hearing a case
a public official, usually a qualified and knowledgeable person in law, who has the power to decide which/who is wrong and which/who is right when an argument, disagreement or accusation on somebody is brought to a court of law, and who knows how to conduct a trial of any case in a court of law;
a person with knowledge and experience in a particular field, such as music, art, science, philosophy, etc. who is invited or given the responsibility of making a valuable opinion and deciding on which candidate is wrong and which one is right or who has gained more points in a competition, contest, test, quiz, etc., and in this context, the person is not necessarily a person who has knowledge in the judicial law, but knows the rules and regulations and what is to be looked for in the contestants or competitors,

the panel of judges on X factor music competition TV show
The judge who is conducting Damien’s case his asked Damien’s lawyer to submit relevant documents that Damien was a senior citizen.
There are cases where some judges who are supposed to be wise, knowledgeable, impartial and honest are found to be corrupt, giving wrong judgements after receiving large sums of money from the accused parties!
The judges of the contest declared Ahmed the winner of the recitation competition.
Pete is a good judge of antique furniture., i.e. Pete knows much about very old and valuable furniture.
