Mi ne komprenas la rilaton inter la du mesaĝoj.

In Esperanto, every verb has a fixed ending that shows its tense or mood:

• -as = present tense
• -is = past tense
• -os = future tense
• -us = conditional
• -u = imperative / jussive
• -i = infinitive

So komprenas means understand / am understanding.

In this sentence, Mi ne komprenas... means I do not understand...

Because rilaton is the direct object of the verb komprenas.

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

• la rilato = the relationship
• la rilaton = the relationship (as the thing being understood)

In this sentence, the thing the speaker does not understand is the relationship, so it gets -n:

• Mi ne komprenas la rilaton... = I do not understand the relationship...

The ending -j marks the plural in Esperanto.

• mesaĝo = message
• mesaĝoj = messages

So la du mesaĝoj means the two messages.

Because there are two of them, the noun must be plural.

Because la du mesaĝoj is not the direct object of komprenas. The direct object is la rilaton.

The phrase inter la du mesaĝoj is a prepositional phrase:

• inter = between / among
• la du mesaĝoj = the two messages

Normally, nouns after prepositions do not take -n unless there is some special directional meaning. Here there is no motion or direction, just a location/relationship between two things, so mesaĝoj stays without -n.

Inter means between or sometimes among, depending on context.

In this sentence, it means between:

• la rilaton inter la du mesaĝoj = the relationship between the two messages

So the sentence is talking about how the two messages are connected to each other.

La is the definite article, meaning the.

It appears twice because both noun phrases are definite:

• la rilaton = the relationship
• la du mesaĝoj = the two messages

In Esperanto, it is normal to say la du mesaĝoj for the two messages. Even though English sometimes relies on context, Esperanto often uses la when a specific set is meant.

No. Numbers like du do not take plural endings or accusative endings.

So you say:

• du mesaĝoj = two messages
• la du mesaĝoj = the two messages

The noun itself shows the plural with -j, but du stays the same.

Usually yes, but its exact sense depends on context.

Rilato can mean:

• relationship
• relation
• connection

In this sentence, la rilaton inter la du mesaĝoj is most naturally understood as:

• the relationship between the two messages
• the connection between the two messages

So if the learner already knows the meaning, it is still useful to know that rilato can be broader than just a personal relationship between people.

Yes. A very literal breakdown is:

• Mi = I
• ne = not
• komprenas = understand
• la rilaton = the relationship
• inter = between
• la du mesaĝoj = the two messages

So, word for word:

I not understand the relationship between the two messages.

Natural English adds do:

I do not understand the relationship between the two messages.

Not completely. Esperanto word order is fairly flexible because endings show the grammatical roles.

The normal order here is:

• Mi (subject)
• ne komprenas (verb phrase)
• la rilaton (object)
• inter la du mesaĝoj (prepositional phrase)

That is the most neutral and natural version.

You could rearrange parts for emphasis, but for a learner, this standard order is best.

In Esperanto, ne normally comes before the word or phrase it negates.

Here it negates the verb:

• Mi ne komprenas = I do not understand

This is the usual placement for sentence negation.

A rough pronunciation guide is:

Mee neh kom-preh-NAHS lah ree-LAH-ton IN-tehr lah doo meh-SAH-joy

A few helpful points:

• Stress is always on the second-to-last syllable:
  • kom-pre-NAS
  • ri-LA-ton
  • me-SA-ĝoj
• ĝ sounds like the j in judge
• j at the end of mesaĝoj sounds like English y

So mesaĝoj sounds roughly like meh-SAH-joy.

Yes, you could, and it would mean something like I do not understand the connection between the two messages.

The difference is mainly nuance:

• rilato = relationship, relation, connection
• konekto = connection, link

Both can work, but rilato is a very natural choice if you mean the general relation between the two messages.

The dictionary forms are:

• mi = I
• ne = not
• kompreni = to understand
• rilato = relationship / relation / connection
• inter = between / among
• du = two
• mesaĝo = message

In the sentence, some of them are changed for grammar:

• kompreni → komprenas
• rilato → rilaton
• mesaĝo → mesaĝoj