Christmas tree and Parasitic plant

Christmas tree noun - A terrestrial evergreen shrub or small tree of western Australia having brilliant yellow-orange flowers; parasitic on roots of grasses.

Parasitic plant and Christmas tree are semantically related. In some cases you can use "Parasitic plant" instead a noun phrase "Christmas tree".

Parasitic plant noun - Plant living on another plant and obtaining organic nutriment from it.

Christmas tree and parasitic plant are semantically related. Sometimes you can replace phrase "Christmas tree" with "Parasitic plant", this phrases are similar.