The orchestra is not a group of instruments - it contains groups of instruments such as woodwind, brass, strings and percussion.
Vocals are their own section in an orchestra
Trumpets are in Brass Section of an Orchestra.
Cymbals belong to the percussion section of an orchestra. Cymbals have, relative to other instruments in an orchestra, an unique timbre which allows them to be heard through the most loudest orchestrations.
The drums belong to the percussion family in and orchestra
The String Section
Low Bass
The string section.
Trumpet is in the brass section.
Woodwind, as far as I know.
The cymbals are part of the percussion section.
It is part of the string section in a symphonic orchestra.
Woodwinds, or as I like to call them, the wood of the wind