The phrase "a broad category" is correct and usable in written English.
It can be used when referring to a wide-ranging classification or grouping that encompasses various items or concepts.
Example: "The animals in the zoo can be divided into a broad category of mammals, birds, and reptiles."
Alternatives: "a wide category" or "a general category".
COKE'S payments to store owners fall under a broad category called marketing support, which has grown substantially in recent years.
It would apply only to service workers, a broad category that includes waiters, cashiers, crossing guards and hairstylists.
The federal budget endorsed by House Republicans calls for reductions in a broad category that includes job training.
Still pretty dismal, though it shows the importance of diversification even within a broad category like stocks.
Kim McCormack is the school's artist in residence, a broad category that includes inventions and learning to work with and manipulate machines.
There is also a broad category of formulas based on schools' expenses, the official said, including costs for building construction or the purchase of school buses.
It was the first time the government had barred trade in a broad category of ancient coins, and collectors and dealers were surprised.
In Bulgaria defamation of public figures (a broad category that can include prominent businessmen) is a crime that can be punished with a fine.
That is a broad category that includes hedge funds and other activities outside the traditional banking system, as well as corporate bond issuance.
The one group that has made no progress at all is the disabled, a broad category that includes anyone with a "limiting longstanding illness".
LAW is supposed to be about universal principles: rules that apply without prejudice to a broad category of human beings, regardless of sex, culture or economic status.
