The best replacement for sides is edges.

The best alternatives to sides are rated as following:
★★★★★  edges
★★★★  faces
★★★  angles
★★★  sides
★★  encroachment
★★  more angles
★★  false start
★  solid rosewood back and sides
★  one
★  triangle
  right triangle
  number of diagonals
  vertices
  either side

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Speaking about sides, one probably shouldn't forget about bbq chicken.

Other search terms related to sides and their ratings are:
★★★★★ bbq chicken
★★★ you
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Google Trends

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sides
edges
faces