Lime-tree and Lime tree

Lime tree and lime-tree are semantically related. In some cases you can replace phrase "Lime tree" with "Lime-tree", this phrases are similar.

Lime tree noun - Any of various deciduous trees of the genus Tilia with heart-shaped leaves and drooping cymose clusters of yellowish often fragrant flowers; several yield valuable timber.

Lime-tree and lime tree are semantically related. You can use "Lime-tree" instead a noun phrase "Lime tree".