यह कोच साफ है।

Here यह means this.

It is usually pronounced yeh in modern spoken Hindi, even though the spelling is यह.

A useful thing to know:

• यह = this / he / she / it (near the speaker, depending on context)
• In this sentence, because it comes before कोच, it means this coach

So यह कोच = this coach.

Because this sentence means The coach is clean, not the clean coach.

Hindi often works like this with predicate adjectives:

• noun + adjective + है
• literally: this coach clean is

So:

• यह साफ कोच है would mean something more like This is a clean coach or this clean coach is..., depending on context
• यह कोच साफ है means This coach is clean

In other words:

• साफ कोच = clean coach
• कोच साफ है = the coach is clean

साफ means clean.

It is one of those Hindi adjectives that often stay the same regardless of gender or number. In other words, it is commonly used as an invariable adjective.

So you can say:

• कमरा साफ है = The room is clean
• गाड़ी साफ है = The car is clean
• कपड़े साफ हैं = The clothes are clean

Notice that साफ stays साफ.

This is different from adjectives like अच्छा / अच्छी / अच्छे, which do change.

है is the verb is.

So the structure is:

• यह = this
• कोच = coach
• साफ = clean
• है = is

Together:

• यह कोच साफ है = This coach is clean

In simple present sentences like this, Hindi usually uses forms of होना (to be), and है is the singular present form.

It is a borrowed word from English, but it is commonly used in Hindi.

Hindi uses many loanwords, especially for modern objects, transport, technology, and everyday urban vocabulary. So seeing कोच in a Hindi sentence is completely normal.

Depending on context, कोच might mean:

• a railway coach
• a bus/coach
• sometimes even coach in the English sense, though context matters

So yes, it is an English-origin word, but it functions as a normal Hindi noun here.

In this sentence, you cannot tell from the visible grammar alone.

Why not?

• साफ does not change here
• है does not show gender
• यह does not show gender either

So even if कोच is treated as masculine in usage, this particular sentence does not clearly reveal that.

This is very common in Hindi: sometimes a noun has gender, but the sentence does not make it obvious unless another word shows agreement.

For example, in past tense or with changing adjectives, gender may become clearer.

In standard written Hindi:

• यह is singular: this
• ये is plural: these

However, in everyday speech, many speakers use ये even when they mean singular this.

So:

• formal/written: यह कोच साफ है
• common spoken Hindi: ये कोच साफ है

Both may be heard, but यह is the standard textbook form for singular.

Just add नहीं before है:

• यह कोच साफ नहीं है।
• This coach is not clean.

That is the normal pattern:

• X + adjective + नहीं है

Examples:

• कमरा बड़ा नहीं है। = The room is not big.
• गाड़ी नई नहीं है। = The car is not new.

A simple pronunciation guide is:

yah/yeh koch saaf hai

More naturally:

• यह = yeh
• कोच = koch (like English coach without stretching it too much)
• साफ = saaf (long aa sound)
• है = hai

So the full sentence sounds roughly like:

yeh koch saaf hai

Yes. Hindi demonstratives often also work like third-person pronouns.

So यह can mean:

• this
• he
• she
• it

Which meaning is intended depends on context.

In your sentence, because यह comes directly before कोच, it clearly means this:

• यह कोच = this coach

If it stood alone, it could mean something like:

• यह साफ है = This is clean / He is clean / She is clean / It is clean, depending on context

A very useful pattern is:

यह + noun + adjective + है

Examples:

• यह कमरा बड़ा है। = This room is big.
• यह सड़क लंबी है। = This road is long.
• यह पानी ठंडा है। = This water is cold.
• यह किताब नई है। = This book is new.

So यह कोच साफ है is a good model sentence for describing something:

• This + noun + is + adjective