What is the different between "onto" and "into"

[Ryanr]

Hi to all, I want to ask about this two word. I know it's talk about movement but can they able to use in the same sentence like this

The tea pours into the mag.
The tea pours onto the mag.

and sorry for my bad english.

[Dozy]

Generally speaking:

"into" means movement towards the interior of something.
"onto" means movement towards the surface of something, especially the upper surface.

In your sentence, the tea is falling down and making contact with the upper surface of the magazine (I assume you mean magazine), so "onto" is the correct word.

[Ryanr]

Sorry,I made a mistake I mean is 'mug'

[Ryanr]

Sorry,I made a mistake what I mean is 'mug'

[Dozy]

Oh, sorry, it was stupid of me not to guess that "mag" was a mistake for "mug"!

In that case it should be "into". The tea is going into the inside of the mug, not just pouring onto the mug's surface.

By the way, although "into the mug" is fine, it's quite hard to think of a context when anyone would actually say "The tea pours into the mug".

[Ryanr]

I always got a mistake about spelling even in my own languages so you aren't stupid.Could you please give me an example where must better than the sentence I wrote.tnx

[Dozy]

It's really just the present-tense / intransitive combination of "the tea pours" that's unusual in practice. Keeping the "tea-pour-mug" theme, more likely might be:

"Let me just pour the tea into these mugs."
"He poured the tea into his mug."
"Could you pour some more tea into this mug, please?"