How to get a solid circle encircled by another circle and solid circle encircled by a square

I am using

plot(X,Y,'o','MarkerFaceColor', 'k')

to get solid circle. But I want to get a solid circle encircled by another circle and solid circle encircled by a square. For example I have attached a fig where at the start there is a big circle and at the end there is a square.

Answer 1

[hosein Javan]

x = 1; y =2;
figure(1)
plot(x,y,'o','MarkerSize',20)
hold on
plot(x,y,'o','MarkerFaceColor', 'k')

figure(2)
plot(x,y,'s','MarkerSize',20)
hold on
plot(x,y,'o','MarkerFaceColor', 'k')