There are many zebras and wolves in the zoo.

I invested in several zero-coupon notes.

Zero-knowledge proofs are used in cryptography to prove the validity of a statement without revealing any additional information.

Zero-order designs are commonly used in experimental research.

Zero-sum games are common in competitive industries.

Zero coupons are a type of bond that does not pay interest during its term.

Many students received zero-grades on their exams.

There are many zero endings in this book.

I have many books.

Many workers are unhappy with zero-hours contracts.