Comparing shades of delay: "sluggishness" vs "slowness"

What is similar?
Both "sluggishness" and "slowness" refer to a lack of speed or rapidity. They can describe the pace of something, such as a response or an action, indicating that it is taking longer than expected.
What is different?
While "sluggishness" often implies not only slowness but also a lack of energy or vitality, "slowness" simply refers to the state of being slow without additional connotations. "Sluggishness" can suggest lethargy or reduced functionality, whereas "slowness" is a more neutral term for describing pace.
Which one is more common?

Examples of usage
Sluggishness- The patient's sluggishness was a concern for the doctors.
- The car's sluggishness on the highway was frustrating to other drivers.
- Her sluggishness in the morning disappears after a cup of coffee.
- The slowness of the internet connection was affecting productivity.
- His slowness in responding to emails is well known.
- She admired the slowness of rural life, finding it peaceful.