Zaay زَاي
Like 'z' in zoo. One dot above.
Its shapes
Zaay never joins the letter after it, so it only has two shapes.
Trace it with your finger
👄 Where the sound comes from
The tongue · ز
Most letters are made by the tongue touching or nearing the roof of the mouth or the teeth.
⚖️ Don't mix it up with
- ذ
Dhaal
Like 'th' in this: tongue tip between the teeth. One dot above. - ض
Ḍaad · heavy
A heavy 'd' made with the side of the tongue. The special letter of Arabic. - ظ
Ẓaa · heavy
A heavy 'th' as in this, tongue between the teeth, full mouth.
Say Zaay and the other letter one after the other, slowly, and feel the difference. A teacher can check you.