Corpus Callosum /ˌkɔːr.pəs kəˈloʊ.səm/    plural corpora callosa /ˌkɔːr.pɚ.ə kəˈloʊ.sə/ 

: the great band of commissural fibers uniting the cerebral hemispheres of higher mammals including humans

Foundation /faʊnˈdeɪ.ʃən/ 

: a basis (such as a tenet, principle, or axiom) upon which something stands or is supported