Urceum et hydriam prope fornacem testaceam ponit ne frangantur neve cadant.

Because they belong to different declensions, so their accusative singular endings are different.

• urceus is a second-declension masculine noun, so its accusative singular is urceum
• hydria is a first-declension feminine noun, so its accusative singular is hydriam

Both words are doing the same job in the sentence: they are the things being placed. English does not show this difference much, but Latin does.

Et simply means and. It joins the two direct objects:

• urceum et hydriam = the pitcher and the water jar

So the person is placing two things, not one.

It is accusative singular feminine.

That happens because prope is a preposition that takes the accusative case. So:

• prope = near
• fornacem = accusative of fornax
• testaceam agrees with fornacem

So prope fornacem testaceam means near the earthen/brick oven.

It modifies fornacem.

You can tell because it matches fornacem in:

• gender: feminine
• number: singular
• case: accusative

So fornacem testaceam is one noun phrase: the earthen oven or the brick oven.

Because Latin often leaves the subject unstated when the verb ending already tells you the person and number.

• ponit = he/she/it places

So Latin does not need a separate word for he or she unless the writer wants emphasis or contrast.

Because the sentence is describing a present action:

• ponit = places, is placing, or sometimes does place, depending on context

Latin present indicative often covers the same range that English expresses with either simple present or present progressive.

Because ne introduces a negative purpose clause.

The basic pattern is:

• ut
  • subjunctive = so that
• ne
  • subjunctive = so that ... not

So here:

• ne frangantur = so that they may not be broken
• neve cadant = and so that they may not fall / nor fall

This is a very common Latin construction after a main verb that implies intention or purpose.

Neve means and not or nor in this kind of clause.

So the structure is:

• ne frangantur = so that they may not be broken
• neve cadant = and so that they may not fall / nor fall

You can think of neve as linking a second negative purpose idea to the first one.

Because they are in a purpose clause introduced by ne and neve.

Latin uses the subjunctive regularly in clauses expressing purpose. So after ponit:

• ponit ... ne frangantur neve cadant
• he/she places ... so that they may not be broken and may not fall

This is not the same as saying that they actually are breaking or falling. It gives the intended result or goal of the action.

Because the meanings of the two verbs are different.

• frango, frangere = to break
  • passive frangantur = they may be broken
• cado, cadere = to fall
  • this verb is normally intransitive, so it is active here: cadant = they may fall

In other words:

• something else breaks them → passive makes sense
• they themselves fall → active makes sense

The subject is understood from the earlier nouns urceum et hydriam.

Even though those nouns are accusative in the main clause because they are objects of ponit, they become the understood subjects of the subordinate verbs in sense:

• he/she places the pitcher and the water jar
• so that they may not be broken and may not fall

Latin does not need to repeat the nouns or add a pronoun if the reference is clear.

Because they refer to two things: urceum et hydriam.

Two coordinated nouns count as plural, so the verbs in the purpose clause are plural:

• frangantur = they may be broken
• cadant = they may fall

Because Latin relies much more on word endings than on word order.

English usually depends on position:

• subject + verb + object

Latin can move words around more freely because endings show their function. In this sentence:

• urceum et hydriam are clearly objects because of their accusative endings
• ponit is the main verb
• prope fornacem testaceam is the prepositional phrase
• ne frangantur neve cadant is the purpose clause

So the word order is natural Latin even if it does not line up exactly with normal English order.

It goes with ponit.

It tells you where the person places the objects:

• ponit = places
• prope fornacem testaceam = near the earthen oven

Then the purpose clause explains why:

• ne frangantur neve cadant = so that they may not be broken or fall

So the structure is basically:

• places them near the oven
• in order that they will not be broken or fall

It is a Latinized Greek word. A learner may notice that it looks Greek, and that is because it is.

A hydria is a kind of water jar. Even though it comes from Greek, in this sentence it behaves like a regular first-declension noun in the accusative singular:

• hydria → hydriam

So you can read it grammatically just like many ordinary first-declension nouns.

Sometimes in smooth English the whole phrase is translated as so that they do not get broken or fall, which may make neve feel close to or in the final translation.

But grammatically, neve is more literally and not or nor. It links a second negative idea to the first one. So in understanding the Latin structure, nor is usually the better guide.