brushwood vs covert

brushwood

• Small trees and shrubs. 

• Branches and twigs fallen from trees and shrubs. 

covert

• Area of thick undergrowth where animals hide. 

• A covering. 

• A disguise. 

• A feather that covers the bases of flight feathers. 

• A hiding place. 

• Under coverture. 

• Secret, surreptitious, concealed.