'act like' vs 'act as'

This word can act as a verb sometimes.
This word can act like a verb sometimes.

Can someone please tell me which of the above two sentences is correct?

Good morning Daemon. Both appear OK, but the first is the one that I would prefer to use.

Hope you are keeping well. How about my new pulp? Do you like it, and are you going to chip in for a couple of chapters?

Bill.

Thanks a lot, Bill.

I am doing great. The story is very interesting. I am reading it everyday. I will write the next chapter.

That’s great Daemon. I’ll hang fire until you do so.

Bill.

Good Evening Friends,

how are you?

I want to ask a question. Please give me the answer of it.
What is the difference between “as” and “like”?
What is the difference between “able” and “capable”?

Please give me the answer of above mention question.

Thankyou

This word can act as a verb sometimes. [color=red]This word can play a part of a verb in a sentence.
This word can act like a verb sometimes. [color=red]This word is not a verb, but it can follow a verb pattern sometimes. I do not know about any parts of speech in English behaving like a verb, but gerund is a verb that behaves like a noun.

As your friend I suggest you do it. (I am your friend and I suggest.)
Like your friend I suggest you do it. (Your friend suggests it an I do too.)

able - (usually followed by to'[/b]) having the necessary means or skill or know-how or authority to do something; "able to swim"; "she was able to program her computer"; "we were at last able to buy a car"; "able to get a grant for the project" [b]capable[/b] - (usually followed by [b]of’) having capacity or ability; “capable of winning”; “capable of hard work”; “capable of walking on two feet”

He came to this country as a tourist. (He was a tourist.)
He came to this country like a tourist. (He seemed to be a tourist, but he wasn’t one.)