Yes, “over” is primarily a preposition, but it can also function as an adverb or adjective depending on the context.
As a Preposition (Most Common Use)
“Over” is a preposition when it shows the relationship between a noun (or pronoun) and another word, often indicating position, movement, or extent.
- Position:
- The lamp hangs over the table.
- Clouds gathered over the mountains.
- Movement:
- She jumped over the fence.
- The airplane flew over the ocean.
- Figurative Use (control, influence, or concern):
- She has control over the situation.
- We argued over the decision.
As an Adverb
“Over” is an adverb when it modifies a verb and does not have an object.
- Come over when you have time.
- She fell over.
- The show is over now.
As an Adjective
“Over” is rarely used as an adjective, but it can mean “finished” or “done.”
- The game is over.
- Is the meeting over yet?
Thus, “over” is mostly a preposition, but it can also function as an adverb or adjective depending on usage.