Every room adds reflections that tell the ear how big the space is. Short, dense reverb sounds like a small room; long, diffuse reverb sounds like a hall or cathedral. Plate and spring reverbs are mechanical devices with their own colours, used heavily in classic pop and reggae.
Too much reverb blurs detail; too little can make music sound dry and close.
Using it in a prompt
Name a space: "small room sound", "big hall reverb", "cathedral reverb", or "dry and intimate". Dreamy styles often benefit from "long reverb tails".