Хороший юрист защищает клиента.

Because хороший has to agree with юрист in gender, number, and case.

Here, юрист is:

• masculine
• singular
• nominative case (the subject of the sentence)

So the adjective also takes the masculine singular nominative form:

• хороший юрист = a good lawyer / the good lawyer

If the noun changed, the adjective would change too:

• хорошая идея = a good idea
• хорошее дело = a good deed/case
• хорошие юристы = good lawyers

Because клиента is the direct object of the verb защищает (protects / defends), so it goes into the accusative case.

The dictionary form is:

• клиент = client

In this sentence:

• защищает клиента = protects the client

For masculine animate nouns, the accusative singular usually looks like the genitive singular, so клиент becomes клиента.

Compare:

• Я вижу студента. = I see the student.
• Я вижу стол. = I see the table.

Why no change in стол? Because стол is inanimate, while клиент is animate.

Because it is the 3rd person singular form of the verb защищать.

The subject is юрист = lawyer, which corresponds to he/she in English, so Russian uses the he/she/it form:

• я защищаю = I protect
• ты защищаешь = you protect
• он/она защищает = he/she protects

So:

• юрист защищает = the lawyer protects

It is:

• present tense
• 3rd person singular
• imperfective aspect

That means it can describe:

• something happening now
• something done regularly
• a general characteristic

So Хороший юрист защищает клиента can mean things like:

• A good lawyer protects the client.
• A good lawyer is protecting the client.
• A good lawyer defends the client.

The exact meaning depends on context.

Because Russian does not make the same strong grammar distinction between simple present and present continuous that English does.

So one form, защищает, can cover both:

• protects
• is protecting

Context tells you which is meant.

This is very normal in Russian:

• Он читает. = He reads / He is reading
• Она работает. = She works / She is working

Russian has no articles.

So:

• юрист can mean a lawyer or the lawyer
• клиента can mean a client or the client

Context tells you which meaning is intended.

That is why Хороший юрист защищает клиента could be understood as:

• A good lawyer protects a client.
• A good lawyer protects the client.
• The good lawyer protects the client.

In practice, context usually makes it clear.

Yes. Russian word order is much more flexible than English because the cases show what each word is doing.

The neutral order here is:

• Хороший юрист защищает клиента.

But other orders are possible, for example:

• Клиента защищает хороший юрист.
  • Emphasizes the client
• Защищает клиента хороший юрист.
  • Can sound more literary or contrastive

Even if the order changes, клиента is still the object because of the accusative ending, and юрист is still the subject because it is nominative.

You know mainly from the case endings.

• юрист is in the nominative case: this usually marks the subject
• клиента is in the accusative case: this marks the direct object

So even without English-style fixed word order, Russian shows the grammar through endings.

That is one of the most important habits for learners: look at the endings, not just the position in the sentence.

Юрист is grammatically masculine, but it can refer to either a male or a female lawyer in many contexts.

So you can say:

• Она хороший юрист. = She is a good lawyer.

Notice something important: many job titles in Russian are often used in the masculine form even for women, especially in formal or neutral usage.

That is why хороший юрист can refer to:

• a male lawyer
• a female lawyer

Depending on context, some feminine job-title forms exist in Russian, but юрист is very commonly used as-is.

The stress is:

• хоро́ший
• юри́ст
• защища́ет
• клие́нта

So the full sentence is pronounced approximately like:

• хоро́ший юри́ст защища́ет клие́нта

For learners, it helps to remember that Russian stress is unpredictable, so it should usually be learned with each word.

The verb защищает comes from защищать, which is imperfective.

The imperfective aspect is used for:

• ongoing actions
• repeated actions
• general facts
• processes

That fits this sentence well, because it sounds like a general statement about what a good lawyer does.

The perfective partner is защитить. But perfective verbs do not normally have a present-tense meaning in Russian. Their present-looking forms usually refer to the future:

• защитит = will protect / will defend

So:

• защищает = protects / is protecting
• защитит = will protect

This is a very common pattern in Russian.

For animate masculine singular nouns:

• accusative = genitive

So:

• nominative: клиент
• genitive: клиента
• accusative: клиента

This is not special to this one word. It happens with many animate masculine nouns:

• студент → студента
• брат → брата
• врач → врача

But with inanimate masculine nouns, the accusative usually stays like the nominative:

• стол → стол
• дом → дом

Yes, very naturally.

Because the sentence uses:

• no articles
• present tense
• imperfective aspect

it can sound like a general statement:

• A good lawyer protects the client.
• A good lawyer defends the client.

In other words, it can describe what a good lawyer is supposed to do, not just one single moment.