Not sure if this is what you need.... but....it is the teaching of the Catholic Church that in the Eucharist the appearance is quite unchanged, but the basic reality has become the body and blood of Christ.
The change from bread and wine to a presence of Christ that is true, real, and substantial is called transubstantiation.
The study of nature, beauty, and art was originally a branch of philosophy called "Aesthetics".
The branch of philosophy which deals with the nature of beauty, art and taste etc. sometimes defined as "Critical <span>reflection on art, culture and </span><span>nature". </span>
