ऋण की वजह से किराया ज़्यादा है।

Yes, in this sentence ऋण means debt or loan.

A learner should know that:

• ऋण is a bit more formal, bookish, or official.
• कर्ज़ is more common in everyday speech.

So this sentence is grammatically fine, but in casual Hindi, many speakers would more naturally say:

• कर्ज़ की वजह se किराया ज़्यादा है।

Both mean essentially the same thing.

Because वजह is a feminine noun, and the postposition phrase is built as:

• X + की वजह से = because of X

The की agrees with वजह, not with ऋण.

So:

• ऋण की वजह से = because of the debt / due to the loan

This is best understood as a fixed expression. Even if the first noun is masculine, feminine, singular, or plural, you still usually get:

• ... की वजह से

Examples:

• बारिश की वजह से = because of the rain
• काम की वजह से = because of work
• बीमारी की वजह से = because of illness

वजह means reason or cause, and से here gives the sense of because of / due to / as a result of.

So:

• वजह = reason
• वजह से = because of, due to

Together, की वजह से is a very common Hindi structure for giving a cause.

A rough breakdown is:

• ऋण = debt / loan
• की वजह से = because of
• किराया = rent
• ज़्यादा है = is high / is more

Yes. किराया can mean:

• rent for a house, room, shop, etc.
• fare for transport, in some contexts

In this sentence, it clearly means rent, because the sentence is talking about something being expensive because of debt or a loan.

Examples:

• घर का किराया = house rent
• बस का किराया = bus fare

So किराया is a flexible word, and context tells you which meaning is intended.

Good question. In Hindi, ज़्यादा often means:

• more
• higher
• too much
• a lot, depending on context

Here, किराया ज़्यादा है means something like:

• the rent is high
• the rent is higher (than expected/usual)

Hindi often leaves the comparison implicit if it is obvious from context. English sometimes does this too:

• The rent is high.

You do not always need to say higher than what.

If you wanted to make the comparison explicit in Hindi, you could say something like:

• ऋण की वजह से किराया और ज़्यादा है। = The rent is even higher because of the debt.
• दूसरी जगहों से किराया ज़्यादा है। = The rent is higher than in other places.

Because ज़्यादा often behaves like an indeclinable word in modern Hindi in this kind of sentence.

So you can say:

• किराया ज़्यादा है।
• कीमत ज़्यादा है।
• फीस ज़्यादा है।

It stays ज़्यादा regardless of gender in these common patterns.

You may also see अधिक in more formal Hindi:

• किराया अधिक है।

But ज़्यादा is much more common in everyday speech.

Because the subject-like noun here is किराया, which is treated as singular.

So:

• किराया ज़्यादा है। = The rent is high.

You would use हैं with a plural noun:

• किराये ज़्यादा हैं। = The rents are high.

But in most normal situations, when talking about rent as a general amount, Hindi uses singular:

• किराया बहुत ज़्यादा है।

Yes, the word order is completely normal.

Hindi often puts the cause phrase before the main statement:

• ऋण की वजह से = because of the debt
• किराया ज़्यादा है = the rent is high

So the structure is:

• [Cause] + [main statement]

This is very natural in Hindi.

You could compare it to English:

• Because of the debt, the rent is high.

Hindi also often places contextual information first, and then gives the main point.

Yes. That is correct, and it means the same thing.

Comparison:

• ऋण की वजह से किराया ज़्यादा है।
• ऋण के कारण किराया ज़्यादा है।

Both mean because of the debt / due to the loan, the rent is high.

The difference is mostly in style:

• की वजह से = very common, natural, everyday
• के कारण = a bit more formal, written, or official

So both are useful, but की वजह से is especially common in spoken Hindi.

Often, yes.

की वजह से is frequently used for causes that lead to a problem, inconvenience, or undesirable result.

Examples:

• बारिश की वजह से देरी हुई। = There was a delay because of the rain.
• बीमारी की वजह से वह नहीं आया। = He didn’t come because of illness.

In your sentence, rent being high because of debt also sounds like an unwanted situation, so की वजह से fits very naturally.

That said, people do sometimes use it in neutral situations too.

Yes, ऋण is a tricky word for learners.

A practical pronunciation guide:

• ऋ in modern Hindi is usually pronounced roughly like ri
• ण is a retroflex n, made with the tongue curled back a little

So ऋण is commonly pronounced approximately like:

• riṇ

Some important notes:

• In everyday speech, many learners find कर्ज़ much easier to pronounce and recognize.
• ऋण is correct, but it is not the easiest beginner word phonetically.

Yes. It is already correct, but many speakers might choose slightly more everyday vocabulary, for example:

• कर्ज़ की वजह से किराया ज़्यादा है।

That sounds more conversational because कर्ज़ is more common than ऋण in daily speech.

Other natural variants:

• कर्ज़ की वजह से किराया बढ़ गया है। = The rent has gone up because of debt.
• लोन की वजह से किराया ज़्यादा है। = The rent is high because of the loan.

Which version sounds best depends on context:

• ऋण = formal
• कर्ज़ = everyday
• लोन = very common in modern speech, especially for bank loans