A quark is a tiny particle that makes up parts of atoms called protons and neutrons. It is an important idea in physics and science.
Protons contain quarks inside them.
Scientists study quarks in physics labs.
Quark is a soft cheese, like cream cheese, used in cooking or eaten alone. It is popular in some European countries.
I like to eat quark on bread.
Quark is creamy and fresh cheese.
Sometimes 'quark' is used as a made-up word in jokes or play. It does not have a real meaning in this way.
He said 'quark' just for fun.
Quark is a funny, silly word here.
In some stories or comics, 'Quark' is a name for a character or a magical word. It is not used in everyday talk.
The hero said 'Quark' to start magic.
Quark is a robot in the story.
People sometimes use 'quark' informally to mean something odd or unusual. This use is uncommon and slangy.
That idea is a real quark.
She saw a quark on the street.
