five, fife, fief

Five or five ( rhymes with drive ) means the number 5--
Five is easy to remember because we have five fingers on each hand.
We leave work at five o'clock.

Fife or fife ( rhymes with life ) means a kind of small flute--
The man in the famous painting "Spirit of '76" is playing a fife.
He practiced every day, and eventually joined a fife and drum corps.

Fief or fief ( rhymes with beef ) means something like a sharecropper's or tenant farmer's holding of land--
The obligations of someone who held a fief sometimes included military service.
Some of the crops raised on the fief were owed to the lord of the manor.

Now that you know that, you can say--
"All five of the workers on the fief stopped when they heard the music of the fife."

Note--"feoff" ( also rhymes with beef ) is either an old-fashioned spelling of "fief", or the actual investiture of someone with land to hold as a kind of tenant--
The man was so reliable, that the lord decided to grant him a feoff of the land by the stream.
 Note # 2--"fie" ( rhymes with die ) is an old-fashioned mild expletive, like "darn!"--
Fie! This castle is too cold in winter!