modern [(1) of the present or very recent time; (2) the most improved]

We enjoyed the Museum of Modern Art. (1)

The old ships are being replaced by modern ones. (2)

money [pieces of metal or paper used to pay for things]

Do you need some money?

month [one of the twelve periods of time into which a year is divided]

This is the first month of the new year.

moon [the bright object often seen in the night sky that orbits the earth about every twenty-nine days]

The full moon is bright enough to read a book by.

moral [concerning what is right or wrong in someone's actions]

He made a moral decision not to fight in the war.

more [greater in size or amount]

She has more talent than anyone I know.

morning [the early part of the day, from sunrise until noon]

He writes in the morning and works in the office later in the day.

most [greatest in size or amount]

Which country has the most people?

mother [(1) the female parent; (2) a woman who has a child or children]

My wife is a good mother. (1)

That woman with the loud voice is the mother of seven children. (2)

motion [(1) a movement; (2) a continuing change of position or place]

The motion of the car sometimes makes her sick. (1)

The motion of the waves did not stop. (2)

mountain [a part of the earth's surface that rises high above the area around it]

They plan to climb Rainier, the great mountain southeast of Seattle.

mourn [to express or feel sadness]

They mourned the death of their daughter.

move [(1) to change position; (2) to put or keep in motion; (3) to go]

Move the chair over here. (1)

The dog's tail moved from side to side. (2)

She moved to California last year. (3)

movement [(1) the act of moving or a way of moving; (2) a series of acts or efforts to reach a goal]

The movement of the boat made her sick. (1)

The gun control movement wants to keep guns away from criminals. (2)

movie [(1) a motion picture; (2) a film]

Which movie would you like to watch? (1)

Making the movie cost 75 million dollars. (2)

much [great in amount]

They read much of the time.

murder [(1) to kill another person illegally; (2) the crime of killing another person]

The angry man murdered three people in his office. (1)

The jury found him guilty of murder. (2)

music [the making of sounds by singing or using a musical instrument]

She has loved music since she was a small child.

must [a word used with an action word to mean necessary]

You must go to school.

mystery [(1) something that is not or cannot be explained or understood; (2) a secret]

No one can explain the mystery of the crying woman in the window of the old house. (1)

What happened that night is still a mystery. (2)