ऊन गरम है।

• ऊन = wool
• गरम = warm or hot, depending on context
• है = is

So the structure is literally wool warm is.

Because normal Hindi word order is usually Subject + Complement + Verb.

So:

• ऊन = subject
• गरम = description
• है = verb/copula

That is why ऊन गरम है is the natural Hindi order. English says Wool is warm, but Hindi prefers Wool warm is.

Hindi does not use articles the way English does. There is no direct everyday equivalent of a/an or the in a sentence like this.

So ऊन गरम है can mean:

• Wool is warm
• The wool is warm

The exact meaning depends on context. If you want to be more specific, you can add words like यह for this or वह for that:

• यह ऊन गरम है = This wool is warm

Yes. गरम is an adjective describing ऊन.

In this sentence, it is a predicate adjective, which means it comes with है to describe the subject:

• ऊन गरम है = The wool is warm

This is different from using the adjective directly before a noun in a phrase like:

• गरम ऊन = warm wool

Some Hindi adjectives change, but some do not.

For example:

• changing adjective: अच्छा / अच्छी / अच्छे
• non-changing adjective: गरम

गरम is one of the adjectives that usually stays the same, so it does not change here even though ऊन is feminine.

That is why you get:

• ऊन गरम है not a special feminine form of गरम

ऊन is a feminine noun.

In this sentence, you do not see that very clearly because:

• गरम does not change
• है is the same for singular masculine and feminine

But gender can show up in other tenses. For example, in the past:

• ऊन गरम थी = The wool was warm

Here थी shows feminine singular.

A simple pronunciation guide is:

ūn garam hai

Roughly:

• ऊन = oon with a long oo
• गरम = guh-rum or guh-rəm
• है = roughly heh with an open vowel

A more natural flow is something like:

oon guh-rum heh

Keep in mind that the roman spelling hai can mislead English speakers. It is usually not pronounced like English high.

Yes, they are closely related forms of the same word, and both are used.

• गरम is very common in everyday Hindi and is easy for learners to read
• गर्म is also common and often appears in more standard spelling

Both mean warm/hot. In many situations, learners can treat them as the same word.

Yes. गरम can cover both warm and hot, depending on context.

For example:

• चाय गरम है could mean The tea is hot
• ऊन गरम है is more naturally understood as The wool is warm

So the exact English translation depends on what is being described.

For a basic neutral sentence, ऊन गरम है is the best order.

Hindi does allow some flexibility, but changing the order can sound marked, poetic, or unnatural for a beginner. So it is safest to learn:

• ऊन गरम है = neutral and natural

If you move words around, the emphasis may change, and sometimes the sentence may no longer sound like a normal simple statement.