I have been searching for hours in Google about the difference between the two words "decision" and "resolution". I found multiple and different answers, including a "decision" resulting from the choice of one person and a "resolution" resulting from the choice of several people. And there was another answer saying that a "resolution" is more formal than a "decision'... I want someone to tell me what is the difference between a "decision" and a "resolution" .
I think the existing answers are each partially right, so I'm going to write my own to be more complete.
A "decision" is a choice between options. Perhaps trivial, like "should I eat a sandwich or should I eat a salad?", perhaps more serious, like, "should we declare war or not?"
There are two potentially relevant definitions of "resolution".
One is a commitment to a decision. Like in the US there's something of a tradition of "New Year's resolutions", where a person commits to following through on some good thing he has decided to do. Like, he "resolves" that he will go on a healthy diet, or quit smoking, or whatever.
That is, you could make a decision but not really have any resolution behind it. Like, "I really think I should go on a diet." You could make a decision that you have no power to carry out at all. Like, "I've decided that Congress should balance the budget." Well good for you, but unless you're a member of Congress there's nothing you can do about it.
The other is that voting bodies will pass a statement affirming something. Like, "Congress passed a resolution praising Sergeant Jones for his heroism". The difference between "passing a law" and "passing a resolution" is that a resolution typically has no effect other than to express the opinion of the voting body. If they pass a law saying citizens should wear blue shirts, then presumably anyone who doesn't wear a blue shirt can be fined or jailed. But if they pass a resolution saying citizens should wear blue shirts, there's no force of law behind it, there's no penalty if someone doesn't do it, they're just expressing an opinion.
They are certainly related, but not the same. A decision normally comes first, then a resolution formalises the decision. A 'resolution' can also refer to a document that may detail a decision and also how it will be taken forward. Some decisions may not require a resolution, especially if the decision is to take no action.
- A decision can be made by a group as well as an individual.
- A resolution is the formalisation of a decision. For example, a formally convened group or body may reach a decision, and then put that decision forward formally as a written resolution.
- An individual can still 'resolve' to do something - for example, a 'new year's resolution'
There's many meanings of "resolution", but for this answer, I'm assuming you only mean the one that's most similar to "decision".
Merriam-Webster's definition that applies here:
4 : a formal expression of opinion, will, or intent voted by an official body or assembled group
So, when a group together formally makes a decision by vote, that decision is called a "resolution". This means a resolution is a special type of decision, so a resolution can later be referred to as a "decision" and it's still correct.