Pulsating variables swell and shrink. Eclipsing binaries get dimmer when a companion star moves in front, then brighten as the occulting star moves away.
Pulsating variables stars are a type of intrinsic variable star in which brightness variations are caused by changes in the area and temperature of the star's surface layers. Eclipsing binaries star are a pair of stars revolving about their common center of mass in an orbit whose plane passes through or very near the Earth.
An eclipsing binary consists of two close stars moving in an orbit so placed in space in relation to Earth that the light of one can at times be hidden behind the other.
Hence, the answer was given and explained above.
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