Pinus ponderosa and Yellow pine

Pinus ponderosa noun - Common and widely distributed tall timber pine of western North America having dark green needles in bunches of 2 to 5 and thick bark with dark brown plates when mature.

Yellow pine and Pinus ponderosa are semantically related. In some cases you can use "Yellow pine" instead a noun phrase "Pinus ponderosa".

Yellow pine noun - Any of various pines having yellow wood.

Pinus ponderosa and yellow pine are semantically related. Sometimes you can replace phrase "Pinus ponderosa" with "Yellow pine", this phrases are similar.