La kolekto enhavas du vinilajn diskojn.

Because diskojn is both:

• plural: -j
• direct object: -n

Start with the noun:

• disko = record / disc

Then add:

• diskoj = records
• diskojn = records, as the direct object of the verb

In this sentence, the records are what the collection contains, so they are the direct object.

In Esperanto, adjectives must agree with the nouns they describe in:

• number (singular/plural)
• case (whether they take the accusative -n)

So:

• vinila disko = a vinyl record
• vinilaj diskoj = vinyl records
• vinilajn diskojn = vinyl records, as a direct object

Both words need the same plural and accusative endings because vinilajn describes diskojn.

Esperanto often marks the direct object with -n. This is called the accusative ending.

In this sentence:

• La kolekto = the collection → subject
• enhavas = contains
• du vinilajn diskojn = two vinyl records → direct object

So -n helps show clearly what is being contained.

This makes word order more flexible than in English, because the grammar endings show the roles of the words.

Because numbers like du do not take plural or accusative endings in normal usage.

So you say:

• du libroj = two books
• Mi vidas du librojn = I see two books

The noun and its adjective change as needed, but du stays du.

Enhavas is the present-tense verb form.

Esperanto verbs are very regular:

• -i = infinitive → enhavi = to contain
• -as = present tense → enhavas = contains / is containing
• -is = past tense
• -os = future tense

So:

• La kolekto enhavas ... = The collection contains ...

Also, Esperanto verbs do not change depending on the subject. So:

• mi enhavas
• vi enhavas
• la kolekto enhavas

all use enhavas in the present tense.

La is the definite article, meaning the.

So:

• kolekto = a collection / collection
• la kolekto = the collection

Esperanto has only one definite article: la. It does not change for gender, number, or case.

Unlike English, Esperanto has no indefinite article like a or an. So kolekto can mean a collection depending on context.

Vinilajn is an adjective. It comes from vinilo (vinyl) and uses the adjective ending -a:

• vinilo = vinyl
• vinila = vinyl, made of vinyl, vinyl-related

So:

• vinila disko = vinyl record
• vinilajn diskojn = vinyl records, as the object

This is a very common Esperanto pattern: turn a noun into an adjective with -a.

Yes, to some extent. Because Esperanto marks the direct object with -n, word order is more flexible than in English.

For example, these still make grammatical sense:

• Du vinilajn diskojn enhavas la kolekto.
• Enhavas la kolekto du vinilajn diskojn.

However, the most neutral and common order is:

• La kolekto enhavas du vinilajn diskojn.

That is the standard subject–verb–object order, and it is usually the best choice for learners.

Because it has no plural ending -j.

In Esperanto:

• kolekto = collection
• kolektoj = collections

So la kolekto means the collection, singular.

Diskojn is pronounced roughly like DIS-koyn.

A few helpful points:

• j in Esperanto sounds like English y
• oj sounds like oy
• final -n is pronounced clearly

So:

• disko → DIS-ko
• diskoj → DIS-koy
• diskojn → DIS-koyn

The same pattern applies to vinilajn, where the ajn sounds roughly like ahyn.

In Esperanto, plural is usually shown by adding -j directly to the noun.

So:

• disko = record
• diskoj = records

Then if the noun is also a direct object, you add -n after that:

• diskojn

This stacking of endings is very normal in Esperanto:

• root + noun ending + plural + accusative
• disk-o-j-n

Yes, that is possible. Esperanto often allows compound words.

So you may see:

• du vinilajn diskojn = two vinyl records
• du vinildiskojn = two vinyl-records

Both are understandable. The version in your sentence is very transparent for learners because it clearly shows:

• vinila = vinyl
• disko = record

So it is a very natural and teachable phrasing.