das Zeug
stuff
A colloquial, often disparaging term for an unspecified amount of things, junk, or odds and ends.
Räum bitte dein ganzes Zeug vom Tisch, wir wollen essen.
Please clear all your stuff off the table; we want to eat.

stuff
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stuff
A colloquial, often disparaging term for an unspecified amount of things, junk, or odds and ends.
Räum bitte dein ganzes Zeug vom Tisch, wir wollen essen.
Please clear all your stuff off the table; we want to eat.

The word element '-zeug' means 'things' or 'material for a purpose'. You find it in many nouns such as 'Werkzeug' (tool, literally things for work), 'Spielzeug' (toy, things for playing), or 'Feuerzeug' (lighter, thing for making fire).
Die Kinder haben ihr ganzes Spielzeug im Wohnzimmer verteilt.
The children have spread all their toys around the living room.
'Das Zeug' (stuff) is a collective term and is almost always used in the singular, even when many different things are meant. A plural form is not common in standard German.
Kannst du bitte dein schmutziges Zeug in die Wäsche bringen?
Could you please put your dirty stuff in the laundry?
In the meaning of 'Kram' (junk/odds and ends) or 'Sachen' (things), 'das Zeug' (stuff) is very colloquial. Depending on the context, it can sound neutral, but often also slightly disparaging or dismissive.
Ich verstehe nicht, warum du so viel Geld für dieses nutzlose Zeug ausgibst.
I don't understand why you spend so much money on this useless stuff.
The idiom 'das Zeug zu etwas haben' (to have what it takes for something) is a fixed expression. It is used with 'zu' + dative or with 'dazu' to say that someone has the necessary talent or potential for something.
Diese junge Sportlerin hat das Zeug zur Weltmeisterin.
This young athlete has what it takes to become a world champion.
thing
'das Ding' and 'das Zeug' can both speak vaguely about things whose names you do not know or do not want to say at the moment. 'das Ding' usually means a single object. 'das Zeug' is more likely to mean several things, clutter, or also a material, often with a slightly negative tone. Learners may confuse the words because both are very general. As a simple guide: for one single item, you are more likely to say 'Ding'; for a lot of messy stuff or an unknown substance, 'Zeug' is more likely.

Räum dein Zeug bitte vom Sofa, bevor die Gäste kommen.
Please clear your stuff off the sofa before the guests come.
Kannst du mir bitte das Ding auf dem Tisch geben?
Can you please give me the thing on the table?