Match these items. Match the items in the left column to the items in the right column. 1. abstraction a recess in a wall meant to house a statue 2. arcade a concept that is open to many interpretations due to its lack of specific or concrete information 3. crusaders knights who went to the holy land from Europe on what they saw as a quest to free Jerusalem from Islam and to find holy relics 4. niche a triangular curved surface between two arches and beneath a dome 5. pendentives a line of arches and their supporting columns