Pine tar and Wood tar

Pine tar noun - A dark viscous substance obtained from the destructive distillation of pine wood.

Wood tar and pine tar are semantically related. In some cases you can use "Wood tar" instead a noun phrase "Pine tar".

Wood tar noun - Any tar obtained by the destructive distillation of wood.

Pine tar and wood tar are semantically related. Sometimes you can replace phrase "Pine tar" with "Wood tar", this phrases are similar.