A cadenza is a section, typically in a concerto, where the soloist plays relatively freely.
How to use it
You can apply the idea by thinning out the accompaniment before or after a solo and letting a free phrase be heard.
How it differs from related terms
A cadenza is a solo passage, while a cadence is a different term that refers to the sense of landing in a chord progression.
Prepare where it returns and how the next part enters, and it will fit into the song.
