transubstantiation vs. consubstantiation

transubstantiation

[tran-suhb-stan-shee-ey-shuhn] / ˌtræn səbˌstæn ʃiˈeɪ ʃən /

noun

the changing of one substance into another.
Theology. the changing of the elements of the bread and wine, when they are consecrated in the Eucharist, into the body and blood of Christ (a doctrine of the Roman Catholic Church).

consubstantiation

[kon-suhb-stan-shee-ey-shuhn] / ˌkɒn səbˌstæn ʃiˈeɪ ʃən /

Theology.

the doctrine that the substance of the body and blood of Christ coexist in and with the substance of the bread and wine of the Eucharist.