Carriage top refers to the roof of a carriage or a vehicle that is supported by pillars or frames. One of the synonyms for carriage top is the roofline, which describes the outline formed by the roof. Another term that can be used interchangeably is the canopy, which is a protective covering supported by posts or rods. The word top can also be replaced with the term roof, which is the uppermost covering of a carriage or any other structure. A sunshade is another synonym used to describe a carriage top, as it provides shade from the sun. Ultimately, these synonyms add variety and precision to our descriptions of carriages.