Cusătura este lângă fermoar.

Because cusătura is the definite form: the seam.

In Romanian, the definite article is usually added to the end of the noun, not written as a separate word like English the.

• cusătură = a seam
• cusătura = the seam

So in this sentence, cusătura means the seam.

Cusătură usually means seam or stitching, depending on context.

In a sentence like this, cusătura is most naturally understood as the seam in a piece of clothing or fabric.

Este means is.

It is the 3rd person singular form of the verb a fi = to be.

So:

• eu sunt = I am
• tu ești = you are
• el/ea este = he/she/it is

In Cusătura este lângă fermoar, este links the subject to its location: The seam is near the zipper.

Not in this sentence.

Romanian normally keeps the verb a fi in sentences like this, especially when saying where something is.

So:

• Cusătura este lângă fermoar. = correct
• Cusătura lângă fermoar. = not correct as a normal sentence

Lângă means next to, beside, or near.

It is a preposition used to show position.

Examples:

• lângă ușă = next to the door
• lângă masă = beside the table
• lângă fermoar = next to the zipper

Fermoar is the indefinite form: a zipper / zipper.
Fermoarul is the definite form: the zipper.

In Romanian, both definite and indefinite nouns can appear after a preposition, depending on how specific the speaker wants to be.

So:

• lângă fermoar = near a zipper / near the zipper, depending on context
• lângă fermoarul = near the zipper, more explicitly definite

Romanian often relies on context more than English does, so an English translation with the zipper can still come from fermoar in some situations.

A simple English-friendly approximation is:

koo-suh-TOO-ra ES-teh LUNG-guh fer-mo-AR

A few important sounds:

• ă in Cusătura sounds like a short neutral vowel, similar to the a in sofa
• â in lângă is a central Romanian vowel with no exact English equivalent
• g in lângă is a hard g, like in go
• r in fermoar is usually rolled or tapped

Both are special Romanian vowels, and both are different from normal English vowels.

• ă is a short, relaxed sound, like the final sound in sofa
• â is a deeper central vowel, a sound English does not really have

In this sentence:

• Cusătura contains ă
• lângă contains both â and ă

Learners often find â harder than ă.

The neutral word order is:

Cusătura este lângă fermoar.

That is:

• Cusătura = subject
• este = verb
• lângă fermoar = location

Romanian word order is fairly flexible, but changing it can change the emphasis.

For example:

• Cusătura este lângă fermoar. = neutral
• Lângă fermoar este cusătura. = more emphasis on the location

Yes. Fermoar is masculine.

You can see this in its definite singular form:

• fermoar = zipper
• fermoarul = the zipper

That -ul ending is a common masculine definite ending in Romanian.

You add nu before the verb:

Cusătura nu este lângă fermoar.

This means The seam is not next to the zipper.

Yes. In everyday Romanian, e is a very common shorter form of este.

So you could say:

Cusătura e lângă fermoar.

This means the same thing and sounds natural in speech.
Este is just a little more formal or careful.