Write the difference between the interference pattern and diffraction pattern.

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Interference patternDiffraction pattern
$(1)$ It is obtained due to the superposition of waves from different coherent sources. Thus,it is the effect produced due to the superposition of different wavefronts.$(1)$ It is obtained due to the superposition of waves originating from different parts of the same wavefront.
$(2)$ Bright and dark interference fringes are of equal width.$(2)$ Diffraction fringes are not of the same width. The central maximum has the largest width,while the width of maxima and minima decreases for higher orders of diffraction.
$(3)$ All bright fringes have equal intensities.$(3)$ The central maximum has the highest intensity,and it decreases with higher-order diffraction maxima.
$(4)$ Dark interference fringes are completely dark.$(4)$ Regions of minimum intensities may not be perfectly dark.

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