Pop/Rock song structure

When an instrument is improvising over other instruments, it is called a _____?

The words of a song are called the _____?

The section of the song that repeats the same melody and the same lyrics is called the _____?

The section of a song that links other sections together is called the ______?

The section of a song that would appear between the verse and chorus is called the ______?

The introduction section of a song is also called the ________?

The section of the song which contains only music and no singing is the ______?

A musical RIFF is ______?

Which one of these is a correct structure for a pop/rock song?

The section of a song which repeats the same melody but different lyrics is called the ______?