形态学
1词的构成
语素morpheme 自由语素 free morpheme 粘着语素bound morpheme
Root词根 词缀affix 词干stem
屈折词汇和派生词汇inflectional affix and derivational affix
2特有的词汇变化lexical change proper
新创词语invention 混拼词blending 缩写词abbreviation
首字母缩写词acronym 逆构词汇back-formation 例：editor—edit
类推构词analogiacal creation 例：work-worked,,slay-slayed
外来词borrowing