closer vs. closely
What's the difference between the two?
5 Answers
"Closer" is the comparative form of the adjective "close": He wanted a closer relationship with his father.
"Closely" is an adverb, used to modify a verb: He closely followed the lead car.
He came closer. Description, place in reality. He came ever closer, now he was nearly upon me, it was the closest anyone has ever been to finding my secret hiding place..
He watched me closely. Description of action, not a place in the real world.( maybe it's an adverb?)
Closer can also be used in non-real terms.
He came close to discovering the truth but she came closer.
But annie right that closer is used to describe a relative position to something, real of not. While closely is an adverb that modifies a verb not a thing.
By watching me closely for days, he came close to discovering my secret, but she came even closer.
If you mean the difference between 'close' and 'closely', which is where the problem usually lies, then I hope that this helps.

Ann´s explanation is perfect.
Closer quiere decir más cerca. Usamos literalmente y en la manera figurado también
Closely es adverbio y se traduce en muchas maneras, dependiendo de contexto. Por lo general, quiere decir ¨de cerca¨ Puede referir a ambos la densidad y la cercanía.