Yes they are have a close meaning , and similarities :- e.g. As MatrixGyal said about the Question: '' How are you /How do you do /What you doing,..'' May you Answer with Good / Fine or even well. I think the most better and strong in its meaning here well and Fine , rarely to you nice so weak. In Another Example: If somebody ask you about : '' Do you Speak English?'' Then its Answer the most perfect and true in meaning and Grammar '' I speak English very well'' =Means in the perfect way , You Cant answer with any other of '' Good/ Fine or Nice'' its Wrong . Well sometimes mean '' Yes , I agree , OK,... and also Fine may use at the same way '' But the others don't work at the same way . Nice may yous for both '' Man , and Animal'' Nice boy , its a nice cat '' , But Good its mostly uses with man. Also Good uses when someone do a Good Job we says '' Very good = well done= Good Job'' we cant say very well in this case its wrong. Thank you ^_^

'well' is the only one of the four words that can be used with a doing action. "I can do it well". 'nice' is either used to describe an object or subject, or a person's character. "That's nice", "You're a nice person". 'Good' is very flexible, except with doing things. "I can speak well" NOT "I can speak good". 'fine' is more difficult. It can be a state "I am fine" or used for objects or subjects "That is a fine wine" or "I can do that, it's fine". However, be careful, if someone asks "how are you" and you only say "fine." this can be a bit too short and you may appear to be upset!

There are all similar in context. It all varies on the question and/or response. Example: good- (excellent) nice( pleasing) well (good) and fine(good) If I were to ask: how are you? you can reply with good, and fine (well to a degree). It all depends, fine can be used to imply something is "finely" chopped. All Varies....