Gorse and Greenweed

Gorse noun - Very spiny and dense evergreen shrub with fragrant golden-yellow flowers; common throughout western Europe.

Greenweed and gorse are semantically related. In some cases you can use "Greenweed" instead a noun "Gorse".

Greenweed noun - Small Eurasian shrub having clusters of yellow flowers that yield a dye; common as a weed in Britain and the United States; sometimes grown as an ornamental.

Gorse and greenweed are semantically related. You can use "Gorse" instead a noun "Greenweed".