La roko kuŝas apud ŝtono.

La is Esperanto’s definite article, the same for all nouns, and it works like English the.

So la roko means the rock: a specific rock.

But ŝtono without la is indefinite, so it means a stone or just stone, depending on context. Esperanto normally does not have a separate word for English a/an.

Yes. That would mean the rock is lying beside the stone.

Use la ŝtono if the stone is also specific and known to the speaker and listener. Use just ŝtono if it is not specific, or if the sentence simply introduces it as a stone.

So the choice depends on context, not on grammar.

The ending -as marks the present tense in Esperanto.

So:

• kuŝi = to lie
• kuŝas = lies / is lying
• kuŝis = lay / was lying
• kuŝos = will lie / will be lying

Esperanto verb endings are very regular, so once you learn them, they work the same way with almost all verbs.

Kuŝi means to lie or to be lying, usually in a horizontal or resting position.

So La roko kuŝas apud ŝtono is a little more vivid than La roko estas apud ŝtono. It suggests the rock is resting there, not just existing there.

Esperanto often uses position verbs where English might simply use to be:

• stari = to stand
• sidi = to sit
• kuŝi = to lie

For objects, this can sound very natural in Esperanto.

Because apud is a preposition, and after a preposition the noun is usually left in the normal form.

So:

• apud ŝtono = beside a stone

The -n ending usually marks the direct object, or sometimes direction toward a place. But here the sentence describes a location, not motion toward that location.

Since the rock is already there and kuŝas is not a movement verb, ŝtono stays without -n.

They are similar, but not identical.

• roko usually means rock, often something larger or more like a mass of rock
• ŝtono usually means stone, often a smaller piece

The boundary is not perfectly strict, just like English rock and stone are not always sharply separated. But that is the general feeling.

So this sentence sounds like the rock is beside a stone, with a slight size or type contrast.

The letter ŝ is pronounced like English sh.

So:

• ŝtono sounds roughly like SHTO-no
• kuŝas sounds roughly like KOO-shas

A rough pronunciation of the whole sentence is:

la RO-ko KOO-shas a-POOD SHTO-no

A few useful pronunciation points:

• r is usually rolled or tapped
• u is like oo in food
• stress in Esperanto is always on the second-to-last syllable

So the stressed syllables are:

• ROko
• KUŝas
• aPUD
• ŜTOno

Because -o is the standard noun ending in Esperanto.

That means:

• roko = a noun
• ŝtono = a noun

This is one of Esperanto’s most useful regular patterns. For example:

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

So once you see -o, you immediately know you are looking at a noun.

Not completely. The most neutral order is the one you see:

La roko kuŝas apud ŝtono.

That is a normal subject-verb-prepositional phrase order.

But Esperanto word order is fairly flexible, so you could also say things like:

Apud ŝtono kuŝas la roko.

That is still grammatical, but it sounds more marked or stylistic, because it puts the location first for emphasis.

So the given sentence is the most straightforward version, but not the only possible one.

Usually apud means beside, next to, or at the side of. It often suggests closeness, but not necessarily actual contact.

So apud ŝtono means the rock is by the stone, next to it, or alongside it. If you wanted to make physical contact clearer, the sentence would usually need extra wording.

In most ordinary contexts, apud is the natural word for beside or next to.