What's the difference between lento and lentor?

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.

Lentor

Definition:

• (a.) Tenacity; viscidity, as of fluids.
• (a.) Slowness; delay; sluggishness.

Example Sentences: