Vitamin D3, also known as cholecalciferol, comes from fortified foods, animal foods (fatty fish, cod liver oil, eggs, and liver), supplements, and can be made internally when your skin is exposed to ultraviolet (UV) radiation from the sun. Structurally, these two are not the same.
Definition of mind for Students. 1  1 : the part of a person that thinks, reasons, feels, understands, and remembers. 2  2 : memory 1 Keep my advice in mind. 3  3 : intention 1 I changed my mind. 4  4 : a person's view or opinion about something Speak your mind.
1 Brain is made up of nerve cells and blood vessels whereas mind is not like that. 2  While brain has a definite shape, mind does not have one. 3  We can see and touch the brain whereas it is not possible with mind.  The brain is an important organ in the human body whereas the mind is not like that.