alternation

the alternation of day and night

There are Anthems to be found amongst them , where every syllable has its just length ; each part of a sentence its proper pause : where the words are not confused by perplexing alternations, or rendered tedious by unnecessary repetitions

dative alternation; locative alternation

This case suggests that the alternation of a polyhedron should be bounded by actual vertex figures and alternated faces. The case of the cube is in agreement with this notion, since the alternated square is nothing.