verbs
argue or speak in defense of
"She supported the motion to strike"
be on the defensive; act against an attack
entails
be engaged in a fight; carry on a fight
"the tribesmen fought each other"; "Siblings are always fighting"; "Militant groups are contending for control of the country"
is a type of (narrower)
stop (someone or something) from doing something or being in a certain state
"We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"
protect against a challenge or attack
"Hold that position behind the trees!"; "Hold the bridge against the enemy's attacks"
fight against or resist strongly
"The senator said he would oppose the bill"; "Don't fight it!"
protect or fight for as a champion
be the defense counsel for someone in a trial
"Ms. Smith will represent the defendant"
state or assert
"He maintained his innocence"