Air plant and Black moss

Air plant noun - Plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it.

Black moss and air plant are semantically related. In some cases you can replace phrase "Black moss" with "Air plant", this phrases are similar.

Black moss noun - Dense festoons of greenish-grey hairlike flexuous strands anchored to tree trunks and branches by sparse wiry roots; southeastern United States and West Indies to South America.

Air plant and black moss are semantically related. You can use "Air plant" instead a noun phrase "Black moss".