► 動詞防戦  [ぼうせん]  [
防戦する]    
meaning:  defend  rank: 4☆ 
彼等は
必死で防戦した ⇨ They desperately defended themselves
► 名詞防戦  [ぼうせん]    
meaning:  defend  rank: 4☆ 
彼等は防戦
一方だった ⇨ They were totally on the defensive
More examples:- 拮抗した攻防戦が続いた ⇨ A closely fought offensive and defensive battle continued