An expression referring to another expression. In stricter uses, an expression referring to something earlier in the discourse or, even more strictly, only reflexive and reciprocal pronouns.

The repetition of a phrase at the beginning of phrases, sentences, or verses, used for emphasis.

An expression that can refer to virtually any referent, the specific referent being defined by context.

An expression that refers to a preceding expression.

The most solemn part of the Divine Liturgy or the Mass during which the offerings of bread and wine are consecrated as body and blood of Christ