Holm tree and Oak tree

Holm tree noun - Evergreen oak of southern Europe having leaves somewhat resembling those of holly; yields a hard wood.

Oak tree and holm tree are semantically related. In some cases you can use "Oak tree" instead a noun phrase "Holm tree".

Oak tree noun - A deciduous tree of the genus Quercus; has acorns and lobed leaves.

Holm tree and oak tree are semantically related. Sometimes you can replace phrase "Holm tree" with "Oak tree", this phrases are similar.