Paghiwalayin ang karton at plastik.

Paghiwalayin means separate or make separate from each other.

Its root is hiwalay, which means separate, apart, or separated. In this sentence, paghiwalayin is being used as a command, so the whole sentence means something like:

Separate the cardboard and plastic.

It has a stronger sense than just be apart; it means someone should actively put them into separate groups.

That is very normal in Filipino.

Filipino often puts the verb first, especially in:

• statements
• commands
• instructions

So:

Paghiwalayin ang karton at plastik.

literally follows the common Filipino pattern:

Verb + marked noun phrase

In English, we also often start commands with a verb, so this part is not too strange:

• Separate the cardboard and plastic.

Ang is a marker. It does not work exactly like English the.

In this sentence, ang marks karton at plastik as the thing being acted on by the verb. Since paghiwalayin is focused on the object being separated, the noun phrase gets ang.

So:

• paghiwalayin = separate
• ang karton at plastik = the cardboard and plastic / cardboard and plastic as the affected thing

A useful beginner idea is:

• ang often marks the main noun phrase the sentence is talking about grammatically

Because at joins the two nouns into one coordinated noun phrase.

So ang can apply to the whole group:

ang karton at plastik
= the cardboard and plastic

You can sometimes repeat ang with each noun for emphasis:

• ang karton at ang plastik

But in a short instruction like this, using just one ang is very natural.

Usually, yes.

Karton can refer to:

• cardboard
• a carton/box, depending on context

In a sentence about sorting materials, karton is very likely understood as cardboard.

So in a recycling or waste-sorting context:

• karton = cardboard
• plastik = plastic

It does not have to show either one clearly.

Filipino nouns usually do not change form for singular vs. plural the way English nouns do. Context tells you the meaning.

So plastik here could mean:

• plastic as a material
• plastic items in general

In a sorting instruction, it usually means the plastic category, not just one single plastic object.

In Filipino commands, you is usually left out because it is understood.

So:

Paghiwalayin ang karton at plastik.

really means something like:

You, separate the cardboard and plastic.

But Filipino does not need to say ikaw here. In fact, adding it would usually sound unnecessary unless you want special emphasis.

In Filipino, command forms often look like the same form used for certain verb infinitives or object-focused verb forms. Here, paghiwalayin functions as an imperative because of the sentence context.

A simple way to think about it is:

• root: hiwalay
• verb form: paghiwalayin
• sentence use: command/instruction

The ending -in is part of a common verb pattern used when something is being acted on. That matches the sentence, because ang karton at plastik is what should be separated.

You do not need to memorize all the technical grammar at once; the practical takeaway is that paghiwalayin here is the natural command form for separate these things from each other.

Yes, and that is also very natural.

The difference is roughly this:

• Paghiwalayin ang karton at plastik = separate the cardboard and plastic from each other
• Ihiwalay ang karton sa plastik = separate the cardboard from the plastic

The second version is a little more explicit because sa clearly gives the sense of from.

So if an English speaker expects from, Ihiwalay ang karton sa plastik may feel easier to understand. But the original sentence is still fine and natural, especially in short instructions.

Because the sentence is treating cardboard and plastic as two categories that should be kept apart.

Using at does not mean and in the sense of combining them. Here it links the two materials that are being separated into different groups.

So the idea is:

• cardboard and plastic are the two things involved
• they should not stay mixed together

English often says separate X from Y, but Filipino can also express the idea by naming both items together after the verb.

Yes. It sounds like something you might see on:

• recycling signs
• waste segregation notices
• classroom instructions
• workplace labels

It has a direct, practical tone. Filipino instructions often use short verb-first commands like this, so it sounds normal and useful.

Usually, maghiwalay would not be the best choice in this exact sentence.

Maghiwalay often means:

• to separate
• to split up
• to part ways

and it is more about the subject doing the separating or becoming separate.

But here the sentence is about separating specific things, and those things are marked with ang. That is why paghiwalayin fits better.

Compare the idea:

• Maghiwalay ang dalawa. = The two separate / split up.
• Paghiwalayin ang karton at plastik. = Separate the cardboard and plastic.

So paghiwalayin is the better form when you are giving an instruction about objects that need to be sorted.