Major
Part of speech: adjective
Definition: Of great significance or importance. Being the larger of two intervals denoted by the same ordinal number. Containing the note which is a major third (four half steps) above the tonic.
Part of speech: verb
Definition: To concentrate on a particular area of study as a student in a college or university.
Part of speech: noun
Definition: A military rank between captain and lieutenant-colonel. A person of legal age. The main area of study of a student working toward a degree at a college or university. A student at a college or university concentrating on a given area of study.
Mayor
Part of speech: noun
Definition: The leader of a city, or a municipality, sometimes just a figurehead and sometimes a powerful position. In some countries, the mayor is elected by the citizens or by the city council.
Example sentence: While Mayor Daley surprised me today with his decision to not run for reelection, I have never been surprised by his leadership, dedication and tireless work on behalf of the city and the people of Chicago.