What's the difference between cento and lento?

Cento

Definition:

• (n.) A literary or a musical composition formed by selections from different authors disposed in a new order.

Example Sentences:

• (1) In February 2003, he appeared at the Carnevale di Cento in Ferrara, where the crowd jeered and heckled before pelting him with eggs.
• (2) She had to write 10 poems, including, impressively, a sonnet, a villanelle and a cento, but thinks her narrative poem Metamorphosis was her best.

Lento

Definition:

• (a. & adv.) Slow; in slow time; slowly; -- rarely written lente.

Example Sentences:

• (1) Un año más tarde, el 43% de los usuarios de transporte público de la ciudad dijeron que el servicio era demasiado lento.