Mahogany is a type of tree, specifically belonging to the genus Swietenia. It is known for its durable, reddish-brown wood, which is highly valued in furniture-making and cabinetry. Mahogany trees can grow quite large and are typically found in tropical regions.
It is a fungus.
Lemon is neither an herb nor a shrub. It is a tree.
shrub
shrub
Shrubs
tree
A cucumber is a fruit (it contains seeds) but can also be classified as a vegetable.
Tree
Lemon plant is a tree, where the lemon fruits are growing. Those lemons, what we buy in grocery stores.
A bougainvillea is a shrub or small tree.
Technically it is called a herbaceous shrub
is bamboo a herb shrub or a tree