Question

What is used to show more possibility? may or can

Answer 1

can is used to show more possibility. can shows ability and may is used for permission And blessings.

Answer 2

Can is used .... Can gives a kind of assurance that the work can and will be done. Like, he can do this work by his own. Here a certain kind of assurance is given, but in may, probability is there ,like she might come today. Here u can't guarantee whether she'll come or not.