Acronyms  Acronyms is a word coined by putting together the initial letters of a group of words.
Affixation  A word formation approach that attaches morpheme - an affix to a base， which is a word with 1 or more affixes in it.
Anaphoric reference 前照应A demonstrative determiner with anaphoric reference is more likely to go with a non-restrictive relative clause
Cataphoric reference 后照应A demonstrative determiner with cataphoric reference， which goes with a restrictive relative clause