Tương ở trên bàn.

It could be either one in writing, because Vietnamese capitalizes the first word of a sentence whether it is a name or not.

So Tương ở trên bàn. could mean:

• Tương is on the table. if Tương is a person’s name
• The sauce/paste is on the table. if tương is a regular noun

You usually tell from context, not from capitalization alone.

Here, ở marks location. It is doing the job of is at / is in / is on.

So in this sentence, ở tells you where tương is located.

A useful way to think of it is:

• X ở Y = X is at/in/on Y

Also, ở can have other meanings in other contexts, such as to live/stay, but here it is simply about location.

They work together, but they are not the same.

• ở = marks that something is located
• trên = specifies the position on / above

So:

• ở says where something is
• trên bàn says the place is on the table

That makes ở trên bàn a natural way to say on the table in a full sentence.

Usually, not as a neutral full sentence.

Tương ở trên bàn sounds complete and normal.

But Tương trên bàn often sounds more like:

• a note
• a label
• a shortened phrase
• an incomplete sentence

In everyday speech, Vietnamese often needs ở in this kind of location statement.

Vietnamese does not always use a direct equivalent of English to be in the same way English does.

In a location sentence like this, Vietnamese normally uses ở, not là.

So:

• English: The sauce is on the table.
• Vietnamese: Tương ở trên bàn.

This is one of the common differences between English and Vietnamese sentence structure.

No. Là would normally be wrong or unnatural here.

Là is mainly used for:

• identification
• definitions
• equivalences

For example:

• Đây là bàn. = This is a table.

But for location, Vietnamese normally uses ở:

• Tương ở trên bàn.

So a learner should remember:

• là for A is B
• ở for A is at/in/on B

The normal order is:

• thing
  • location phrase

So:

• Tương = the thing
• ở trên bàn = where it is

That gives:

• Tương ở trên bàn.

If you want to start with the location, Vietnamese usually changes the structure more clearly, for example:

• Ở trên bàn có tương.
• Trên bàn có tương.

That means something like There is sauce on the table.

So the original sentence is a subject-first location sentence, which is very common.

It can technically cover both ideas, because trên can mean on or above/over, depending on context.

But with bàn in an ordinary sentence like this, the most natural meaning is:

• on the table
• specifically, on top of the table

If you needed to make above but not touching clearer, you would usually add more context or use different wording.

Vietnamese often leaves definiteness unstated and lets context handle it.

So bàn can mean:

• the table
• a table

and tương can mean:

• the sauce
• some sauce
• sauce

depending on the situation.

If you want to be more specific, Vietnamese can add extra words, such as:

• cái bàn = the table / a table
• bàn này = this table
• lọ tương = the jar/bottle of sauce
• nước tương = soy sauce

But in a simple sentence, leaving those out is very normal.

That depends on what meaning was intended.

Tương by itself can refer to a kind of paste/sauce, but in real life Vietnamese often uses a more specific expression, such as:

• nước tương = soy sauce
• tương ớt = chili sauce
• tương đen = hoisin-like dark sauce

So if the intended meaning is specifically soy sauce, many speakers would find Nước tương ở trên bàn. clearer.

Still, tương alone can be fine if the context already makes the kind of sauce obvious.

A very common way is:

• Trên bàn có tương.
• Ở trên bàn có tương.

Here, có expresses there is / there are.

Compare:

• Tương ở trên bàn. = The sauce is on the table.
  Focus: the sauce, and where it is.

• Trên bàn có tương. = There is sauce on the table.
  Focus: what is present on the table.

Both are natural, but they highlight slightly different things.

A simple pronunciation guide is:

• tương — level tone
• ở — hỏi tone
• trên — level tone
• bàn — falling tone

Very rough English-friendly approximation:

• tương ≈ tyuhng
• ở ≈ a short uh with a dipping/rising tone
• trên ≈ chane or train without the final English glide
• bàn ≈ bahn with a falling tone

The tones matter a lot, especially on ở and bàn.

Yes. Vietnamese often does not force you to mark definiteness the way English does.

So the same sentence can be understood in different ways depending on context:

• The sauce is on the table.
• Some sauce is on the table.
• Sauce is on the table.

If you want to make it more definite, you can add words such as:

• này = this
• đó/kia = that
• a classifier or container word

For example:

• Chai tương ở trên bàn. = The bottle of sauce is on the table.
• Nước tương này ở trên bàn. = This soy sauce is on the table.