在學習英語詞匯中，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。

　　3.戰斗

　　fight: It is a bodily struggle

　　struggle: An effort of any kind to overcome difficulty.

　　battle: A fight between armed forces.

　　campaign: A series of related military operations in a war.

　　war: A period of fight between countries or states when

　　weapons are used and many people are killed.

　　combat: A fight, conflict, controversy.