The institute comprises three discrete buildings.
dis (off, away)#cernere (distinguish, separate, sift) (Latin)
discrete, disjointed, disparate
this crate (thats used to keep cold drink bottles) that keeps the bottles separate n unconnected. so that they don break dis+crate if u can remember the discrete maths, u can see that one topic is separated from the other and subtopics also unconnected to each other. The islands of Crete (Greece) are discrete.