In the format given below,keywords "shower curtains" is present in Cell A2 & Cell A3; "bathroom accessories" is present in Cell A3 & Cell A4. Is it possible to highlight the duplicates or remove the duplicates with the help of macro

In excel, it will be in below format.
Cell A2: shower curtains, towels, bath mats, bath accessories, bathroom organizers
Cell A3: bathroom accessories, shower curtains, curtain rings
Cell A4: bath mats, bathroom accessories, shower mats