However, if you need to explain them in a general sense, you can use terms like:
* Shadow planets
* Lunar nodes
* North and South nodes
These terms accurately describe their astronomical and astrological significance.
It's important to note that Rahu and Ketu are not actual planets, but rather mathematical points that represent the intersection of the Sun's and Moon's orbits.
If you have a specific context in mind, it might be helpful to provide more information so I can give you a more precise answer.