The term 'nave' is used to refer to the central part of a church, typically the area where the congregation sits. The crossword solutions for this term are 'INNOCENT' (8 letters), 'HUB' (3 letters), and 'APSE' (4 letters). 'INNOCENT' refers to the traditional purity of the nave, while 'HUB' alludes to its centrality in the church's layout. Finally, an 'APSE' is a semicircular recess at the end of the nave, often containing the altar.