The term 'side to side' is a phrase used to describe two objects that are placed parallel to each other, with no space between them. The crossword solutions for this term are 'WIDTH' (5 letters) and 'ACROSS' (6 letters). 'WIDTH' refers to the distance between two sides of an object, while 'ACROSS' refers to the distance between two points that are in the same direction. Together, these two words describe the concept of two objects being placed side by side with no space between them.