La felo estas mola.

La is the Esperanto definite article, meaning the. It never changes form.

Esperanto does not have a separate indefinite article like English a/an. So:

• la felo = the fur
• felo = fur or a fur / fur depending on context

The ending -o marks a noun in Esperanto. So felo is a noun.

This is one of the most important patterns in Esperanto:

• -o = noun
• -a = adjective
• -e = adverb
• -i = infinitive verb

So when you see felo, you can immediately recognize it as a noun.

Yes. Estas is the present-tense form of esti, which means to be.

Esperanto verbs are very regular:

• esti = to be
• estas = am / is / are
• estis = was / were
• estos = will be

Unlike English, the verb does not change depending on the subject:

• mi estas = I am
• li estas = he is
• ili estas = they are

So estas works for all persons and numbers.

Because mola is an adjective, and adjectives in Esperanto end in -a.

Here, mola means soft. The root is mol-, and the adjective ending makes it mola.

Some related examples:

• mol-a = soft
• mol-e = softly
• mol-o = softness

So the -a ending tells you that mola is describing something.

Because there is no direct object here.

The sentence uses estas to link the subject and its description:

• La felo = the subject
• estas = is
• mola = a description of the subject

In Esperanto, the -n ending usually marks the direct object, but there is no direct object in La felo estas mola.

Compare:

• La felo estas mola. = The fur is soft.
• Mi tuŝas la felon. = I touch the fur.

In the second sentence, felon gets -n because it is the object of tuŝas.

It actually does match felo in the way Esperanto requires.

Adjectives agree with the nouns they describe in number and case:

• singular noun -> singular adjective
• plural noun -> plural adjective
• accusative noun -> accusative adjective

So here:

• felo = singular, not accusative
• mola = singular, not accusative

If it were plural, you would say:

• La feloj estas molaj. = The furs are soft.

If it were accusative in another kind of sentence, the adjective would also match.

Yes, Esperanto word order is fairly flexible. The normal, neutral order is:

• La felo estas mola.

But you can change the order for emphasis or style, for example:

• Mola estas la felo.

That still means the same basic thing, but it sounds more marked or literary, with extra focus on mola.

For learners, it is best to start with the standard order: subject + verb + complement.

A simple pronunciation guide is:

LA FE-lo ES-tas MO-la

A few key points:

• Stress in Esperanto is almost always on the second-to-last syllable.
• So:
  • fe-lo -> stress on fe
  • es-tas -> stress on es
  • mo-la -> stress on mo

The vowels are pronounced clearly and consistently:

• a like a in father
• e like e in bed but often a bit cleaner
• o like o in for or a pure o sound

Felo usually refers to fur, animal hair, or a coat/pelt.
Haro usually means hair in the general sense, especially human hair.

So:

• felo = fur
• haro = hair

If the sentence is talking about an animal’s soft coat, felo is the natural word.