Searched them on Google....

[U]scherzo[/U]
A lively movement, commonly in 3/4 time, introduced as a replacement for a minuet in pieces with multiple movements.

[U]minuet[/U]
1. A slow, stately pattern dance in 3/4 time for groups of couples,
originating in 17th-century France.

2. The music for or in the rhythm of the minuet.

3. A movement in 3/4 time that is usually the third, but sometimes the
second, of a four-movement symphony or string quartet.