What is meant by the term composition in chemistry [closed]

This may seem trivial at first glance, but It is used a lot in introduction to chemistry chapters and so I need to understand what they mean by composition.

Yes, I have seen the google definitions, I am here because I dint understand them.

And lastly, is chemical composition the same as composition

closed as off-topic by Mithoron, A.K., user55119, Mathew Mahindaratne, Todd MinehardtApr 9 at 23:35

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Chemical composition tells you what type of atoms a compound is made of, and how many atoms of each type are in the compound. It is the information contained in a sum formula, for example of the molecule $$\ce{H2O}$$ (two atom of hydrogen, one atom of oxygen).
Sometimes, composition does not give you the number of components but only the ratio. For example, I could say a sample of DNA is composed of 56% A and T nucleotides, and 44% C and G nucleotides. Or I could say magnesium chloride crystals contain twice as many chlorine atoms than magnesium atoms, so we write $$\ce{MgCl2}$$. That makes sense because crystalline magnesium chloride is not made of molecules.