The flesh is called "coconut meat."
The liquid inside is called "coconut water."
When you put the raw flesh into a blender and puree it into a liquid, you get "coconut milk."
When you dehydrate the flesh to remove water content and then put it into a blender, you get "coconut butter."
Just in case you want to find out the nutritional value of each, those are the terms you want to use. I'm pretty sure I'm right.
Don't put your trust in anyone on this forum, including me. You are the key to your own success.