alternate

> alternate and alternative
alternate and alternative are liable to be confused. Alternate means "every other" or "occurring by turns", as in "They visit her mother on alternate weekends" and "between alternate layers of meat and cheese sauce". Alternative means "offering a choice" or "being an alternative", as in "If the motorway is busy there is an alternative route". Alternative is found in some cases in modern usage to mean "not conventional, not traditional", as in "alternative medicine" and "alternative comedy".