在學習專業英語詞彙中，有時同義詞的'辨析是很不容易的，我們一般從三方面進行區分，即：語法、語義和文體。語法主要是詞性、搭配、句式等的區分;語義主要是詞義的本義、引申義、比喻義和內涵和外延等的區分;文體主要是正式和非正式、褒義和貶義等的區分。
1.錯誤
(誤會) mistake: A wrong thought, act. It implies carelessness. Anyone can make a mistake.
(過錯 弱點) fault: A bad point, but not of a serious moral kind. It refers to behavior and character. His only fault is that he lacks ambition.
find fault with sb / at fault
shortcoming: weakness, failing ; It refers to failures or deficiencies in things as well as people.
In spite of all her shortcomings I still think shes one of the best teachers in the school.
(疏忽) error: A mistake (formal sometimes literary) It implies deviation from a standard or model
The accident was caused by human error.
(缺點 毛病) defect: sth lacking or imperfect. It refers to quality.
The radio was returned because of a defect.
(失誤 過失) blunder: A very stupid or unnecessary mistake. It implies ignorance.
This is the fatal blunder of his life.
