Just a macrophotography. I took this foto with my Oppo smartphone. According to Wikipedia, The coconut tree (Cocos nucifera) is a member of the family Arecaceae (palm family) and the only species of the genusCocos. The term coconut can refer to the whole coconut palm or the seed, which, botanically, is a drupe, not a nut. The spelling cocoanut is an archaic form of the word. The term is derived from the 16th-century Portuguese and Spanish word cocomeaning "head" or "skull", from the three indentations on the coconut shell that resembles facial features.
But, in Indonesia, we call it "kelapa". From what I hear, the word "kelapa" is adopted from Sanskrit, kalpawreksa, meaning "the tree gives all the necessities for life". It is called like this because of its various useful properties and its coconut and fruit compounds. Coconut shell for example, can be used as charcoal.
Best regards from Indonesia, @dasheng