La trupo atendas la estraron.

In Esperanto, -o marks a noun in its basic singular form. So trupo means troop, company, or group of performers/soldiers, depending on context.

• trupo = a troop
• la trupo = the troop

The word la is the definite article, like English the.

The -n ending marks the direct object in Esperanto. The direct object is the thing or person directly affected by the verb.

In this sentence:

• La trupo = the troop → the subject, the one doing the action
• atendas = waits for / is waiting for
• la estraron = the board / committee / leadership → the direct object, the one being waited for

So estraro becomes estraron because it is the object of atendas.

English usually shows subject and object mainly by word order:

• The troop waits for the board ≠ The board waits for the troop

Esperanto often marks the object with -n, which makes the grammar clearer and allows more flexible word order.

So:

• La trupo atendas la estraron.
• La estraron atendas la trupo.

Both mean the same thing because la estraron has the object marker -n.

In Esperanto, -as is the ending for the present tense.

So:

• atendi = to wait for
• atendas = waits / is waiting for / do/does wait for

Esperanto verbs do not change according to the subject:

• mi atendas = I wait / am waiting
• vi atendas = you wait / are waiting
• la trupo atendas = the troop waits / is waiting

Yes. In Esperanto, atendi already includes the idea of waiting for someone or something.

So:

• Mi atendas vin. = I am waiting for you.
• La trupo atendas la estraron. = The troop is waiting for the board.

English uses the preposition for, but Esperanto normally does not with atendi.

Estraro usually means a board, committee, leadership group, or governing body.

It is built from:

• estri = to lead, direct
• -ar- = a group or collection
• -o = noun ending

So estraro literally suggests a group of leaders/directors.

Depending on context, it could mean:

• board of directors
• committee
• leadership
• governing board

The suffix -ar- means a collection, group, or set of things or people.

Examples:

• arbo = tree → arbaro = forest
• vorto = word → vortaro = dictionary (a collection of words)
• estraro = board/leadership group

So estraro is not just one leader, but a group acting as a directing body.

Because both nouns are definite:

• la trupo = the troop
• la estraron = the board

Esperanto uses la for the, and it does not change for gender, number, or case.

So it stays la in all of these:

• la trupo
• la estraro
• la estraron
• la estraroj
• la estrarojn

Yes, but the meaning would become less specific:

• Trupo atendas estraron. = A troop is waiting for a board / a troop waits for a board

That sounds more general or less clearly identified.

With la, the sentence refers to specific known things:

• La trupo atendas la estraron. = The troop is waiting for the board.

Yes. Esperanto word order is fairly flexible because the -n ending shows the object.

These can all mean basically the same thing:

• La trupo atendas la estraron.
• La estraron atendas la trupo.
• Atendas la trupo la estraron.

However, the most neutral and common order is subject + verb + object, which is the original sentence.

The subject is usually the noun without the accusative -n ending.

Here:

• la trupo = no -n, so it is the subject
• la estraron = has -n, so it is the object

That tells you that the troop is doing the waiting.

It is singular. In Esperanto, plurals end in -j.

So:

• trupo = troop
• trupoj = troops
• la trupo atendas la estraron = the troop waits for the board
• la trupoj atendas la estraron = the troops wait for the board

If the object were plural, it would be:

• la estrarojn = the boards / committees (plural object)

Yes. Trupo can mean a troop or troupe, often a group of performers, but in some contexts it may also suggest a military group. The exact meaning depends on context.

So without more context, la trupo could be:

• a theatrical troupe
• a dance troupe
• a troop/group

The grammar stays the same no matter which sense is intended.