* MOUNTAINS: Common Noun: A general term for a large landform that rises above the surrounding area.
* HIGHLANDS: Proper Noun: This likely refers to a specific geographical location, perhaps a mountain range on the Moon.
* MOON: Proper Noun: The natural satellite of Earth.
* ABOVE: Preposition: Indicates position relative to something else.
* SURFACE: Common Noun: The outer layer or face of something.
Let me know if you have any other sentences you'd like me to classify!