Coactor pecuniam ab emptore accipit.

The subject is Coactor.

You can tell because coactor is in the nominative singular, the case typically used for the subject of a finite verb in Latin. Also, the verb accipit is third-person singular, so it matches a singular subject: coactor = he/she/it receives.

So the basic structure is:

• Coactor = subject
• pecuniam = direct object
• ab emptore = from the buyer
• accipit = receives

Because pecuniam is in the accusative singular.

In this sentence, pecuniam is the direct object of accipit. It is the thing being received. Latin commonly uses the accusative case for the direct object.

The base noun is pecunia, and its accusative singular form is pecuniam.

So:

• pecunia = money, wealth
• pecuniam = money as the object of the verb

Because ab takes the ablative case, and the ablative singular of emptor is emptore.

Here ab emptore means from the buyer. The preposition ab shows separation or movement away from someone or something.

So:

• emptor = buyer, purchaser
• emptore = by/from the buyer, after a preposition that requires the ablative
• ab emptore = from the buyer

Ab means from or away from.

In this sentence, it marks the source from which the money comes. The collector receives money from the buyer, so Latin uses ab + ablative:

• ab emptore = from the buyer

This is a very common Latin pattern.

Because the next word, emptore, begins with a vowel.

Latin has two forms of this preposition:

• a
• ab

Before a vowel, ab is the normal form. Since emptore begins with e-, Latin uses ab emptore.

Accipit is:

• present tense
• active voice
• indicative mood
• third-person singular

It comes from the verb accipio, accipere, meaning receive, accept, or take.

So accipit means:

• he receives
• she receives
• it receives

In this sentence, it goes with coactor, so the sense is the collector receives.

Because Latin does not have articles like English the and a/an.

So a noun like coactor can mean:

• the collector
• a collector

and emptore can mean:

• from the buyer
• from a buyer

Which one sounds best depends on the context or the translation you have been given.

Latin word order is more flexible than English word order because the endings show each word’s job in the sentence.

So Coactor pecuniam ab emptore accipit could be rearranged, for example:

• Pecuniam coactor ab emptore accipit
• Ab emptore coactor pecuniam accipit
• Coactor ab emptore pecuniam accipit

These all keep essentially the same core meaning, because:

• coactor is still nominative
• pecuniam is still accusative
• emptore is still ablative after ab

That said, word order can affect emphasis. The original sentence is a straightforward, neutral order.

Yes, ab + ablative can mean by with a passive verb, but not here.

In this sentence, the verb is active: accipit = receives. So ab emptore naturally means from the buyer.

Compare:

• Coactor pecuniam ab emptore accipit = the collector receives money from the buyer
• Pecunia a/ab emptore datur = the money is given by the buyer

So the same preposition can sometimes be translated differently, depending on the verb and the sentence structure.

They belong to different declensions:

• coactor = third declension
• pecunia = first declension
• emptor = third declension

Their forms here are:

• coactor = nominative singular
• pecuniam = accusative singular
• emptore = ablative singular

This is a good example of how Latin uses case endings rather than fixed word order to show grammar.

Coactor is a noun meaning a collector, especially someone who collects money. Depending on context, it can be translated more specifically as something like tax collector or debt collector.

For grammar purposes here, the important point is that it is a person noun in the nominative singular, functioning as the subject.

Because Latin pecunia is a singular noun, and English money is also normally treated as singular or uncountable.

So:

• pecunia = money
• pecuniam = money as the object of the verb

English does not usually say a money, and Latin does not need a plural here either. The singular form works naturally for the general idea of money.

Yes. It is a very normal and clear pattern:

• person receiving in the nominative
• thing received in the accusative
• source introduced by ab + ablative
• verb in the appropriate person and number

So Coactor pecuniam ab emptore accipit is a clean example of a standard Latin sentence structure.