What's the difference between windless and zephyrless?

Windless

Definition:

• (a.) Having no wind; calm.
• (a.) Wanting wind; out of breath.

Example Sentences:

• (1) Launches take place in the windless early-morning hours, when mists blanket the sweeping ranchlands.
• (2) In the period to 2030, it could provide a flexible back-up for renewables, on windless or cloudy days.
• (3) It’s kind of what I’m all about.” Kotsenburg’s jump was the high point of a sunny, windless day at the Rosa Khutor Extreme Park.
• (4) Synchronization of the swarming time of males was also favoured by warm windless weather.

Zephyrless

Definition:

Example Sentences: