Myristica fragrans and Spice tree

Myristica fragrans noun - East Indian tree widely cultivated in the tropics for its aromatic seed; source of two spices: nutmeg and mace.

Spice tree and Myristica fragrans are semantically related. In some cases you can use "Spice tree" instead a noun phrase "Myristica fragrans".

Spice tree noun - Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood.

Myristica fragrans and spice tree are semantically related. Sometimes you can replace phrase "Myristica fragrans" with "Spice tree", this phrases are similar.