What is the difference between justice and morality? Evidently, the concepts

What is the difference between justice and morality? Evidently, the concepts overlap each other, and in many cases they appertain to each other. I have made some observation, though I am not quite sure whether they are of any relevance, in terms of difference. Firstly, it appears to me that morality deals with the means of an action, in most of the cases, rather than the ends, where the motive of your action is of major, if not absolute, significance (whereof Kant suggested good will as the basis of morality, or something done out of reverence of law). In justice, however, the means are scarcely ever mentioned, and all we hear about is the ends. It appears to me that some ends are in themselves the measure of justice, independent of intention. Also, the word justice, apparently, from the word "jus", which means law, which certainly does make it easier to approach. However, it does not appear to be the case that law is equal to justice. Laws can, supposedly, also be unjust. It really bothers me that I cannot substantiate the difference between the two concepts, for it appears to me that I can apprehend them, though not separate from each other.

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