Black moss and Old man's beard

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.

Old man's beard is a synonym for black moss. In some cases you can use "Old man's beard" instead a noun phrase "Black moss".

Old man's beard 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.

Black moss is a synonym for old man's beard. You can use "Black moss" instead a noun phrase "Old man's beard".