Horse chestnut and Horse-chestnut

Horse chestnut noun - Tree having palmate leaves and large clusters of white to red flowers followed by brown shiny inedible seeds.

Horse-chestnut and horse chestnut are semantically related. In some cases you can use "Horse-chestnut" instead a noun phrase "Horse chestnut".

Horse chestnut and horse-chestnut are semantically related. Sometimes you can replace phrase "Horse chestnut" with "Horse-chestnut", this phrases are similar.