勇気 and 恐怖: acting with courage despite fear
Separate feeling fear from finding courage, including sentences in which both are present.
Courage toward action
勇気, read ゆうき, means courage in facing difficulty or fear. 勇気を出して質問しました。 says that someone found the courage to ask a question.
質問する勇気がありませんでした。 says that the person lacked the courage to ask. Do not change this into not knowing what to ask.
The feeling of fear
恐怖, read きょうふ, is intense fear or terror. 暗闇に恐怖を感じました。 describes feeling afraid of the darkness.
恐怖が消えました。 says that the fear disappeared. The sentence does not specify what made it disappear.
Acting while afraid
恐怖を感じながらも、勇気を出して前に進みました。 says that someone found the courage to move forward despite feeling afraid.
Here, ながらも contrasts fear with action while allowing both to coexist. The presence of 勇気 does not mean that there was no fear.
In 恐怖を感じながらも、勇気を出して前に進みました, was fear absent?
Show the answer and why
No. The person felt afraid but found the courage to act anyway.