Sidereal year and Sidereal month

Sidereal year noun - The time for the earth to make one complete revolution around the sun, relative to the fixed stars.

Sidereal month and sidereal year are semantically related in time measured by stars topic. In some cases you can use "Sidereal month" instead a noun phrase "Sidereal year".

Sidereal month noun - Period between successive conjunctions with a star, 27.322 days.

Sidereal year and sidereal month are semantically related in time measured by stars topic. You can use "Sidereal year" instead a noun phrase "Sidereal month".