I sometimes become confused when it comes to looking up the definitions of plants or fruits' names.
Let's take the example of “Mango” which denotes both, fruit and a tree in its definitions from Oxford:
1. A fleshy, oval, yellowish-red tropical fruit that is eaten ripe or used green for pickles or chutneys.
2. The evergreen tropical Indian tree that bears the mango.
So regarding this, I ask that why do we need to add the word "tree" in “Mango” (e.g. Mango tree) if the “mango” itself denotes a tree. Similarly, I ask other questions like:
Neem or Neem tree?
Guava or Guava tree?
Orange or Orange tree?
Apple or Apple tree?
Most clearly, if I remove the word “tree” from Mango, for instance, it looks ambiguous that does not clarify wether I am referring to a fruit or a tree:
“He is cutting mango.” [it's not clear, is he cutting tree or a fruit? ... and regarding this I ask that if it looks ambiguous after removing the word "tree" then why do the definitions say that it denotes both, the fruit and a tree?]