Die werk is moeilik en boonop fisies.

Boonop means moreover, besides, on top of that, or furthermore.

So Die werk is moeilik en boonop fisies means something like:

• The work is difficult and, on top of that, physical.

It adds an extra point, often with a sense of this makes it even more challenging.

Die is the definite article, so die werk means the work.

Afrikaans uses die for the with all nouns, whether they are singular or plural. Unlike English, it does not change form.

Examples:

• die boek = the book
• die boeke = the books
• die werk = the work

If you said just werk, it would usually mean work in a more general or indefinite sense, depending on context.

Here, werk is a noun, meaning work.

You can tell because:

• it comes after die, so it is die werk = the work
• the verb in the sentence is is

So the structure is:

• Die werk = subject
• is = verb
• moeilik en boonop fisies = description of the subject

As a verb, werk means to work, for example:

• Ek werk vandag. = I am working today.

This is a very common Afrikaans question.

In Die werk is moeilik en boonop fisies, fisies is used after the verb is, so it is a predicate adjective. In this position, Afrikaans normally uses the base form of the adjective.

• Die werk is fisies. = The work is physical.

But when an adjective comes before a noun, it often takes -e:

• fisiese werk = physical work
• moeilike werk = difficult work

So:

• Die werk is fisies. → after the verb, no -e
• Die fisiese werk → before the noun, usually -e

Because both adjectives describe the same subject, Afrikaans only needs one linking verb here:

• Die werk is moeilik en boonop fisies.

This is just like English:

• The work is difficult and physical.

You could repeat is, but it would sound more marked or less natural in a simple sentence:

• Die werk is moeilik en is boonop fisies.

That is grammatical, but the version with one is is smoother and more normal.

The structure is:

• Die werk = subject
• is = verb
• moeilik en boonop fisies = predicate/adjectival description

So the order is basically:

Subject + verb + adjective(s)

That is very similar to English:

• The work is difficult and physical.

The word boonop is inserted to add emphasis to the second description.

Moeilik usually means difficult, hard, or challenging.

In this sentence, it most naturally means the work is not easy to do.

Depending on context, moeilik can also sometimes mean:

• troublesome
• awkward
• complicated

But here, difficult is the best basic meaning.

Examples:

• Die toets is moeilik. = The test is difficult.
• Hy is moeilik. = He is difficult. / He is hard to deal with.

Yes, Afrikaans allows some flexibility, but the position affects style and emphasis.

Your sentence:

• Die werk is moeilik en boonop fisies.

This sounds natural and clear.

You may also see:

• Die werk is boonop moeilik en fisies.
• Die werk is moeilik, boonop fisies.

But the original version is good because boonop clearly adds the second idea: it is difficult, and on top of that, physical.

So for learners, the original word order is a very useful model.

Yes, you can. That would still be grammatical.

But the emphasis changes:

• Die werk is moeilik en boonop fisies
  = the main point is that the work is difficult, and an added point is that it is physical

• Die werk is fisies en boonop moeilik
  = the main point is that the work is physical, and an added point is that it is difficult

So the order helps show what the speaker wants to highlight first.

Usually it is very similar, but not always identical in every context.

In this sentence, fisies means the work requires bodily effort or is physically demanding.

Examples:

• fisiese arbeid = physical labour
• fisies sterk = physically strong

Sometimes English uses physical in slightly broader or more abstract ways, and Afrikaans may choose a different wording depending on context. But here fisies is a very direct and natural match.

A very natural English rendering would be:

• The work is difficult and physically demanding.
• The work is difficult and, on top of that, physical.

The Afrikaans sentence is perfectly natural, but English often prefers physically demanding instead of just physical when describing work. That is a translation choice, not a grammar issue.

A rough English-friendly guide:

• moeilik ≈ MOOY-lik or MOO-ee-lik
• boonop ≈ BOAR-nop or BOH-nop depending on accent and how roughly you approximate it

A few helpful notes:

• oe in Afrikaans usually sounds like the oo in book, not like the oo in moon
• ui in moeilik is not exactly an English sound, so learners often approximate it at first
• stress usually falls early in the word

If you are learning pronunciation, it is best to listen to native audio, because Afrikaans vowel sounds do not always map neatly onto English spelling.

Sometimes, yes, but boonop is usually stronger than simple also.

Compare:

• en ook = and also
• en boonop = and moreover / and on top of that

So boonop often suggests an extra burden, extra feature, or additional point.

In this sentence, it gives the feeling:

• The work is difficult, and to make matters even tougher, it is physical too.

So also is possible in a loose translation, but moreover or on top of that captures the tone better.