Merriam-webster's definition for here/there as a noun is "here"=this place, and "here" as an adverb "here"=to/in this place ; at this location.
In this sentence: "He's living around here". What part of speech is the word "here"?
He's living around London. At this point of view, "here" acts like a noun.
He's living around to this place. It doesn't seem natural.....
Besides that, if "around" works like a preposition, I think I could not use here as an adverb. But every dictionary defines "here" as an adverb.
HELP ME! I speak Portuguese, these concepts are really difficult for me.