Label a plot

Plot[Sin[x], {x, 0, 22}, PlotLabel -> "sin(x)"]

-Graphics-

Plot[Sin[x], {x, 0, 22}, PlotLabel -> Style["sin(x)", FontSize -> 18]]

-Graphics-

Plot[Sin[x], {x, 0, 22}, PlotLabel -> Style["sin(x)", FontSize -> 18], Background -> StandardYellow]

-Graphics-

Labeled[Plot[Sin[x], {x, 0, 22}], "sin(x)"]

Labeled[-Graphics-, sin(x)]

Labeled[Plot[Sin[x], {x, 0, 22}], Style["sin(x)", "Graphics"]]

Labeled[-Graphics-, sin(x)]

Labeled[Plot[Sin[x], {x, 0, 22}], Style["sin(x)", "Graphics"], Background -> StandardYellow]

Labeled[-Graphics-, sin(x), Background -> StandardYellow]