Confusing words/phrases

IN vs INSIDE It is their function as a preposition that most people confuse; the two prepositions in and inside can sometimes be used interchangeably since they indicate a location. But the preposition in only suggests a location whereas inside carries a strong sense of being physically enclosed

Each other and one another Quiz competition Lag behind and lacking behind Postponed and cancelled Guy Invited to and invited for Disvirgin and deflower